TWI317471B - - Google Patents

Description

1317471 IX. Description of the invention: [Technology of invention] Field of the invention The invention relates to a method for controlling emails, and relates to a method for using mail SMTP to provide gifts to Yuxuan. [Prior Art] Enterprise mail information security issues from viruses, . Junke, and even spam hunting, Ba Daxin's mail is still auditing, virus charm bonus and 贱 mail anti-blocking software A, the foundation is based on: miscellaneous library The operation and analysis technology, in hopes of bringing together a large number of "mail_", plus the township plus _ and the wisdom of the method to achieve "Qing _ _" Wei. However, (4) the lack of knowledge is classified as too subjective, such as pornography, wealth, drugs, business, etc., non-deterministic, may be misjudged, and scanning and filtering of mail content, resulting in system resource consumption and communication efficiency. Ma arrived as spam, and the countries supplemented the legislation. The _New Zealand consensus, the postal code was divided into garbage-like advertising scales, so the peach theory "Saki mail anti-blocking" ^ We must ___ fine pieces. The article "(10)_" "Brit is a norm" as an example: the sender's identity: prohibiting anonymous, forged > The sender must have a legitimate intent: the ambition of bullying is prohibited. Shipment _ identity: must rely on the real email address for 7 people to reply. The sender must process the feedback: commercial emails such as advertisements must allow the recipient to "opt in" or "unsubscribe". It is produced by the US Federal Trade Union (FTC). The spam under CAN_Spam legislation refers to the transmission of emails by anonymous, forged, spammy or illegal (changing information or hiding information, etc.) *Advertising mail thank you senders to obtain the recipient's address through the transfer pipeline, It is the source of the e-mail that is being sent to the public. The cake can be traced to the source and has the right to cancel the subscription through the official channel. The conventional spam blocking technology can be roughly divided into content filtering, numerical calculation and heuristic technology. Face surgery. The filtering barriers of the surrender, the recipient, the subject of the email, the content of the email, the name of the email, the name of the file, and the text of the file are all collected through blacklists to prevent spam; The list of fresh stomach, g, the establishment of time-consuming, low age, blacklist misjudgment and other shortcomings. The numerical calculation method is based on the calculation and analysis technology of the huge database. By collecting the "mail content" of the garbage, it is numerically weighted to calculate the side of the anti-blocking; Cross-community views (such as pornography, wealth, drugs, business, etc.), inconclusive, possible misjudgment, scanning of e-mail content, such as m source consumption and low communication efficiency. The heuristic technique is similar to the above numerical calculation method. It is also based on the calculation and analysis of a huge database to define the "postal capacity" of a large amount of garbage. In addition to numerically weighting the contents of the mail, it also adds time and wisdom. Method, so in addition to the lack of numerical calculation methods, when the dragon face is large,! The higher the false positive rate. In view of the above, the present invention is directed to the above-mentioned various problems, and proposes to use the mail SMTP communication line to ride the __hee email pattern to effectively overcome the above-mentioned shortcomings. SUMMARY OF THE INVENTION The main object of the present invention is to provide an instant analysis of the control of the e-mail by means of a kind of mail-to-mail communication behavior, and to compose the purpose of the mail rectification control unit. p communication behavior instant analysis 咐胄 娜 咏 咏 咏 咏 咏 咏 咏 咏 咏 咏 咏 咏 咏 咏 咏 咏 咏 峨 峨 峨 峨 峨 峨 峨 峨 峨 峨 峨 峨 峨 峨 峨 峨 峨 峨 峨 峨 峨 峨 峨 峨 峨 峨 峨 峨Accurately control the mail to achieve point-to-point, multi-point to multi-point, eve, multi-point, and have the advantages of network bandwidth, system resources and hard disk, and pay attention to high network security and high The dual efficiency of mail communication efficiency. Another object of the present invention is to provide an instant analysis for controlling e-mail by using a mail SMTp communication.

The invention has the advantages of saving operating costs. According to the present invention, a method for controlling electronic mail by using the mail condition is as follows. First, the mail passing value is different from the information preset of the mail header.

'Frequently §fUr is the model policy; when the agent receives an e-mail, the TO', the e-mail, and the e-mail policy are sent to each other to verify the e-mail. Whether the behavior of the mail complies with the above-mentioned mail 诵 ^ ° is a plate type policy, and according to the verification result - the corresponding blocking / transmitting action. The purpose, technical contents, features and effects achieved by the present invention will be more readily understood by the detailed description of the embodiments and the accompanying drawings. [Embodiment] The invention of the invention is carried out by using the pre-spoken mail communication behavior model policy to verify the mail transmission of an e-mail (4) The analysis of the transmitted data 'actively determines whether the behavior of the e-mail conforms to the behavior allowed by the system to achieve the purpose of mail access control and spam prevention. The sealed email is called the mail text (Mail coffee). In general, the text system 3 includes the Maii transfer data and the message header (c沾ntent). A complete e-mail will be processed by the mail delivery agent (swollen t (X), 10 1317471 and mail user generation Tao Caishi, Wei) in the feeding machine and the client. This is an email. This pass mode. The characteristics and transmission of this e-mail in this e-mail are analyzed by the true and false values of the mail transmission data such as the instant message _, the e-mail postal mail transmission value and the "mail header", and are accurately summarized and Deducted hundreds of types of mail behaviors, in order to control the entry and exit of e-mail and spam prevention. Since the present invention uses the mail transmission value of an e-mail to set the mail communication behavior model policy for managing mail, it is necessary to explain the contents of the mail transmission value before explaining the method of the present invention. Email mail value is usually the sender's account number, the recipient's account number, the recipient's host address, the sender's host address, the reply address, the domain name server (DNS), and the electronic mail war. After the e-mail axis sends the end bar 11, the bureau ___ the general provider (4), the feeding device, etc., after the delivery, the agent will pass an e-postmark on the e-mail. 11 1317471 Post-Communication Behavior

Behavior pattern 1 take action behavior pattern 2 behavior pattern 3

Taking action, taking action, printing, communication, behavior, tactics, tactics, tactics, tactics, tactics, tactics, tactics, tactics, tactics, tactics, tactics, tactics, tactics, tactics, tactics _ suspicion, standard „ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

The second picture, in the second picture, shows that the setting of each policy 10 includes [mail transmission value] and [mail header] two rules, 112, the above three rules 12 must be set to match the system. carried out. Regarding the setting of $12, the user can specify the match, the non-conformity, and the one of the unmatched ones, that is, the user can specify [envelope sender] or [rhythm recipient]. The village chooses to compare or skip [mail & title] and the correlation between all the rules 12 is [and], all must be paid for the 4 is considered as a condition, the line will be executed to take appropriate action Similarly, when the 1G mail communication behavior model policy 1G is determined, it is possible to specify compliance, non-conformity, and skipping one of the requirements according to the requirements. After the mail communication behavior model policy and its rules 12, when the agent receives a mine mail, it is a scale mail communication behavior model 13 1317471 朿 〇 〇 - - - The mail transmission data is compared. The mail delivery data is compared with the mail transmission value and the title capital π of the email, and even the content and the attached file, and the pre-determined mail communication behavior is considered. ! Policy 1G and its rewards are based on the behavior of the e-mail communication behavior model, and the corresponding blocking/transmission actions are taken according to the verification results. - In the 'transfer communication behavior marriage policy 1 () and its rewards can be set by the setter to simplify the behavior of the domain level material to judge - e-mail is a relay mail, or Jing - electronic shirt money check The courtesy mail δ δ these mail communication behavior model policy ω and its rules (4) defined as spam behavior, __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The policy is to compare the email transmission of the email to verify whether the behavior of the email conforms to the policy of the email communication behavior model, and if so, the email is represented by the email, and then the lion electronic Mail; if not, the X email is sent. Conversely, when the email communication behavior model policy 10 and its rules 12 are defined as the behavior of the exemption mail, then the agent receives the email and uses the email communication behavior model policy 10 The transmission of data is consistent with the behavior of the 13 1317471 := mail in accordance with the behavioral model policy: e-mail is exempt from e-mail, so the e-mail is transmitted; if not I's the electronic domain. Correction _ pieces of slaves, can set the corporate policy of the ceremony, free of charge to read the ridge can light company, Zimen, important customers, contacts Malay manufacturers, §τ_子报_domain name or fixed ΙΡ , or the object of the object ______ work, the agreement, the special _), the inter-enterprise _ courtesy object is preferred. Because the action taken by the agent is based on the presentation of the content of the mail communication behavior model policy, the result is that when the mail tsusaki _ type policy simulates the spam behavior, the age meets the policy _ Saki mail, mail _ message behavior Model money (four) level mail line tree, when the financial compliance policy is released m only for the control process of spam to elaborate "the simulation of the exemption mail will not repeat. 15 1317471 S12 'XJ Allowed to transfer. Yes Is the powder broadcaster's hand piece suitable for the first piece of communication pole? Yes No r Check whether the mail of the f-mail conforms to the second mail behavior 椹 Φ 蒗? Yes 1 No « Can you continue the following one-way behavior? Yes ‘Is it consistent with the last piece of the game? r < This handcuff is not allowed to transmit S14 |yS16 LT S18 U-S20 Third figure, in the case of spam control, when verifying that the email meets the mail communication behavior_policy 1G, its The detailed mosquito step is as shown in the third figure. When the agent receives the email, it uses the first email communication behavior model policy to verify the email transmission data of the email, and whether it meets the first- E-mail behavior _ money, if it is met, the step is positive, that is, the e-mail can be transmitted, if not, the steps are similar. In the step Μ, the agent system continues to trace the e-mail narration with the second e-mail communication behavior model policy, and the escaping bribes and the squad are used as the model politics I. Proceed to step S12, if the right does not match, then proceed to the step mail, continue the following - the mail communication behavior model policy to follow the key of the sub-mail, the last - domain communication behavior 16 1317471 pull type policy is exhausted; when _ last - mail The communication behavior model policy, such as step S18, when the last-mail item f is the government policy__, if the email meets the email communication behavior model policy, then step S12 is performed, if the email still does not match The rule of this mail track type policy can consider that the email is indeed not allowed to be transmitted. In this case, proceed to step S2, where the agent takes appropriate action to prevent the email from being transmitted. Among them, when the e-mail is not transmitted, the processing party at this time can refuse to receive the e-mail rumor-error code and difficult message, or directly _ _ _ _ _ _ _ _ _ _ _ _ _ When the communication behavior model policy is specified, it is specified. In addition, in the flow of the third figure, whenever using one of the mail communication behavior models, the detailed description of the steps can be found in the second figure, as explained below: (8) First 'Take the true/false verification of the e-mail message by the first rule to determine whether it meets the first rule, if yes, proceed to step (9), otherwise if step (c); (b) use the second rule Continue to verify the e-mail transmission data of the e-mail to determine whether it complies with the second rule. If otherwise, proceed to step (6). If yes, continue with the following rule to trace the e-mail until the last rule 17 1317471, The disease is stopped and the result of the final decision I-lang determines that the email is the message of the message. If it is met, the email can be sent out. If not, proceed to step (C). ; and (4) continue to the following - transfer communication behavior model money in the Langlai chasing the lake 2 electric mail, to _ its skills in line with this scale Tongsaki Lai policy, right Fuhe 'Society can send this email can be transmitted Go out, if not, then Under - mail traffic behavior policy _ _ _ to recover practices of electronic material, until the most - mail traffic behavior model Zheng Long last. Therefore, the present invention manages by grasping the comprehensive and important information of the e-mail, and as long as the mail behavior and the processing method thereof are correctly set, Wei effectively achieves the purpose of controlling the e-mail. Since spam is anonymous, forged, spammy or illegal (change information or hidden information, etc.), the source of the private mail can be traced back to the source and has _ positive_take _, if the verified sender deliberately Identifying possible spammers by sending emails anonymously, forged, spammed, or illegally (changing information or hiding information, etc.) The above email communication behavior model policy can be used to determine if the email is spam. E-mail, (4) breaks the basis of the contact with the e-mail shirt has abnormal behavior, the abnormal line riding often, forgery, spamming _ and other behavioral food 18 1317471, the brother Wei Qianzi mail is still anti-f behavior, it can be sensitive In the case of junk mail cattle, the status of the anonymous behavior can be the title information column; the sender host and the reply round (4); _ fine _ her service provider () host, etc.. The forgery behavior is the source host is external Domain, but the sender's address is pseudo-collected within the domain: or the nickname _ job (deletion) is incorrectly specified. If the issue is excessive, the delivery method is abnormal and the frequency of the change is still frequent. For the lease host Among them, regarding the analysis of the anonymous behavior, the method of the present invention can distinguish the above-mentioned enumeration of the round, (4) Qing, the electronic component sent by the copyright, such as _ post office record - (four), mail core _^ or mailing list to do n (Listse ·) E-mail sent by the e-mail. This month's e-mail SMTP communication behavior is used to instantly control the e-mail. The method is usually implemented in the agent, and the more frequent users are the mail delivery agent. Agent _) Execution stage, using the default spam behavior simulation, by grasping the "mail transmission value" and "mail header" and other information, and backtracking the true and false values of the mail transmission data, it is possible to correctly verify that the behavior is appropriate "General mail form", shot, mail pass autumn (MTA) can be a router. 19 1317471 Controlling the use of the mail sMTp communication behavior of the present invention to the instant analysis - the spirit of the e-mail method has been said, the town has three specific examples to verify the method of rugged, to capture this technology can be considered The description of the examples is obtained with sufficient knowledge to be implemented. Example -: Mail in and out f - Specific internal gambling only sends e-mails to specific internal users. Enable 0 Envelope Sender 0 Envelope Recipient 0 Mail Transfer Value if 秘田> Title Alignment Item Host Alignment Item Host Alignment Item Host ◎ Slightly Sewed Letters]... ... with / not + with / not included / non-aligned items requirements comparison method with / non-Header Element Method +/- select the name early or fill out

Select list specific internal use pick list specific internal use pick list specific internal use ◎ 〇 〇 〇 符合 上述 上述 ' 依照 依照 依照 依照 依照 依照 依照 依照 依照 拒绝 拒绝 拒绝 拒绝 拒绝 ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' And error message 〇 direct transmission 20 1317471 Example 2: Spam anti-blocking An anonymous behavior example, the sender host is different from the reply mailbox host. Enable Mail Transfer Value: The correlation between rules is [and], and all matches are considered as conditions. □ Envelope sender. Comparison item with/non-selection list EnvelopFrom +/- □ Envelope recipient comparison item with/non-selection list EnvelopTo +/- 1 1 □ Mail transmission value comparison item with/non-selection list EnvelopTo +/- Mail Header ◎ Compare 启用 Skip to enable mail heading: The correlation between rules is [and], and all matches are considered as conditions. 0 Compare the project requirements. Compare/exclude the list or fill in the From Host Cache +/- 0. Compare the requirements of the project. Compare/exclude the list or fill in the Return-Path Host Match Cache +/-. Those who do not meet the above policies in accordance with ◎ shall be executed in accordance with the following methods. Processing method ◎ Refuse to accept, return error code and error message 〇 Delete mail, do not return error code and error message 〇 Direct transmission ‘ 21 1317471

Alignment project with / non EnvelopFrom +/- project with / non EnvelopTo +/- mail transmission value Example 3: spam anti-blocking - forgery behavior example, the source host is an external domain, the sender address is pseudo-intra-host Select the list and compare the items to /合—~~=—mail header................................ Lb# _~~ — * Comparison item contains ^ EnvelopTo +/-

The internal host conforms to the processing method of the strip system~~·......——..............◦.........ϋ全... .... The above policy, according to the downstream Wei τφ ◎ refused to receive, back to each ---..--... Select list - requirements or self-breaking one ~~~~~~____

*Square code and error message ^

Therefore, the present invention utilizes the mail characteristics and transmission principle of an e-mail to analyze the true and false values of an e-mail "mail test", "coffee question", and the transmission data, and to verify and verify the data through repeated retrospective verification. Deducting the ambiguity of the cow is whether it is allowed by the default e-mail communication behavior model policy, and then achieves the control of e-mail and the anti-blocking of the mail. Therefore, the present invention does not shoot precise control mail, effectively prevents spam, so as to improve network security, and saves network bandwidth, system resources and hard disk, in order to achieve the efficiency and efficiency of the mail communication. The cost is not in the spirit of the patent. The above description is made by implementing the features of the present invention, which can be used by the skilled person to implement the contents of the present invention, and (4) the limited patent patent®, so that the others have not deviated from the invention. Equivalent modification or modification, still containing the fine τ described in the application [simplified description of the schema] Schematic description: postal communication behavior model policy} take action stomach behavior slightly 1 behavior 褀 2 behavior pattern 3 Guo piece communication behavior楛-type political 箓 2 Ρ Ρ 通讯 communication behavior model political 箓 3

Take action Take action Take action Brother 圊 The first picture shows the method of parsing mail behavior to control emails in the present invention. Schematic diagram 23 1317471

10 Second 圊 The second figure is a detailed flow chart of the invention in the process of verifying the e-mail by using the rule of the mail communication behavior model policy. 24 1317471

The third figure is a flow chart of the policy verification email in the default mail communication behavior model of the present invention. [Main component symbol description] ίοEmail communication behavior model policy 12 rules 25

Claims (1)

1317471, application for patents®··-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Agent (Agent) received - e-mail model government, . ', remote mail communication behavior political tactics - _ e-mail poetry W afternoon pass round Beca conduct behavior comparison, to test 7 model political test ~ Beta cut 4 ❺ 转 转 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The series of emails; the method of controlling emails. For the instant solution 2. The method of e-mail control, the policy of the e-mail communication behavior model belongs to the door ban, and the rib wire exempts the mail • 仃, then the agent receives the e-mail from the e-mail. The method includes the following steps: comparing the e-mail communication information of the e-mail with the e-mail communication behavior policy to verify whether the e-mail behavior conforms to the e-mail communication behavior, and deletes the proposal. (4) sending the electricity to the 26 1317471 sub-mail; and if not, blocking the e-mail. As described in the second paragraph of the patent application scope, the use of the SMTp communication behavior of the mail immediately analyzes to control the electronic postal green, the shot, the exemption of the postal inspection (four) including the parent company subsidiary, important customers, the exchange of Wei business, the subscription of the electronic newspaper network The domain name and at least one of the groups of fixed IP parties. 4. "Please use the method of mail, communication, and daily call to control e-mail as described in item i of the patent scope, and the towel, in the matter of communication, the tactics of the tactics, including Qian Ding. The age of the policy, which is selected from the criteria of conformity, non-conformity, and skipping the comparison. 5. If the application is based on the method of real-time analysis to control the e-mail The mail transmission detail includes the mail passing value and the headline information to which the email belongs. For example, the method of using the mail § Μτρ communication behavior to immediately analyze the official mail by the mail, the duplicate test "electronics" Whether the mail meets the mail =,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, False verification, whether it complies with the policy of the first-mail communication behavior model, if yes, proceed to step (9), otherwise if step (6); (9) allow the electronic saki as if to go and the second mail communication behavior policy Follow the e-mail behavior, to _ whether it meets the second e-mail communication behavior model policy, and if so, proceed to step (9), otherwise continue to follow the e-mail communication behavior model policy to chase the e-mail, until the end - The e-mail communication behavior model policy is exhausted, and when the e-mail still does not meet the final-mail communication behavior model policy, the agent hogs the e-mail. For the instant analysis of the officially controlled e-mail method, the i, /, and the mother-in-the-mail communication behavior model policy include a plural rule 'in use—the e-mail communication behavior model policy email to the e-mail When transmitting data for verification, the following steps are further included: (8) Performing a true/false verification on the mail routing information of the email to determine whether it meets the first rule, and if so, performing step (9), if otherwise, performing the step (6); (b) continue to verify the e-mail transmission data of the e-mail by the second rule to determine whether it complies with the second regulation Then j right or advance step (C), if it is 28 131747, the τ-Wei Cai axis quotation, the last rule of the money is used up, and according to the final use - the verification result of the rule determines Whether the e-mail conforms to the e-mail communication behavior model policy, and if so, allows the e-mail to be transmitted, if otherwise, proceed to step (c); and (0 continue to the following - touch track orbital e-mail e-mail to determine It is to study the policy of the next _mail communication behavior model, and repeat the above steps (8) and (b). For example, the application for patenting 7 tearing (four) _ piece tearing is a method of instant analysis to control email, wherein each of these The rule verifies that the verification criteria of the email is selected from the compliance, non-conformity, and skipping one of the steps, and the verification authority is set in the step of setting the policy of the behavior model. Qing Shusi Qing (4) prospective ^ instant analysis to control the method of e-mail 'where the e-mail communication behavior model policy is used to determine whether the e-mail has anti-f behavior, the abnormal behavior package There are selected from anonymous, forgery, illegal spamming, and a group consisting of at least of which - actors. 1〇·If you apply for the instant analysis of the mail-based communication behavior as described in item 9 of the patent application scope, you can control the electronic scales, and its towel, 峨 蝴 蝴 自 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 ;+ ^ The host is different and the reply mailbox host is at least one of the groups consisting of the network service provider_host. 11. If the application of the mail communication behavior described in item 9 of the patent view is to be analyzed in real time to control the electronic mail method, the host and the miscellaneous behavior are the external domain but the sender address is pseudo-initiated as the internal host. And the domain name server (DNS) of the domain is incorrect - the actor. • If you apply for the exclusive side of the ninth lie, the mail-by-mail communication behavior is analyzed immediately. The method of controlling the fine parts, the towel, and the miscellaneous distribution include those who have abnormal shipping methods and frequent changes. 13. If the application for the special fiber around the 9th tears the message SMTp communication behavior instant analysis to control the e-mail, the needle, the face of the ride includes the address of the owner of the rental host. Recognized as follows: Please refer to the method described in the patent paradigm for the instant change of the tear-off communication behavior. The method of controlling the e-mail, the shooting of the e-mail and the additional Tan case as the setting content of the mail communication material model policy. 30 1317471 15. If the patent application scope is the first method to use the mail to read the communication behavior to analyze and control the email, the leaf analysis (MTA) 4 mail delivery agent SMTP communication behavior instant solution to the mail transfer agent (MTA) The method of using the mail to analyze and control the email as described in claim 15 of the patent application, wherein a router. 17. As described in the first paragraph of the patent of h patent, the mail communication method is an instant analysis method for officially controlling emails, wherein the mail transmission value is selected from the sender account, the recipient account number, and the receipt. At least one of a group consisting of a host address, a sender host address, a reply address, a domain name server (DNS), and an electronic postmark. 1S. The method for real-time analysis of officially controlled e-mail by using the mail SMTp communication behavior as described in claim 17 of the scope of the patent application, wherein the provider of the electronic postmark is selected from a sender server, a central server, and a network At least one of a group of Road Service Provider (ISp) servers. 31 1317471 19. If the method of patent application is to control the e-mail, the self-rejection of the e-mail, the scam, and the SMTp communication behavior of the e-mail are analyzed immediately, and the processing method of blocking the e-mail is selected! Among the e-mails, the way to see such as Shen Shi lion, Che Qing _ shout behavior instant analysis to ^ control e-mail method, 〃中 'When refusing to receive the e-mail, the system returns an error code and error message at the same time . ’, 32 1317471 VII. Designated representative map: (1) The representative representative of the case is: (1). Take action mail companion communication behavior model politics II behavior pattern 1 behavior pattern 2 -12 behavior pattern 3 10~^TM mail #通信行为模曳政12 mail#communication behavior model 3H politics 13 'if·* »« .... ...............................................^^^ Take Action Take Action Take Action 1 (2) Simple description of the symbol of the representative map: 10 Mail Communication Behavior Model Policy 12 Rule 13174471 8. If there is a chemical formula in this case, please reveal the chemical formula that best shows the characteristics of the invention: