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C07D271/00—Heterocyclic compounds containing five-membered rings having two nitrogen atoms and one oxygen atom as the only ring hetero atoms
C07D271/12—Heterocyclic compounds containing five-membered rings having two nitrogen atoms and one oxygen atom as the only ring hetero atoms condensed with carbocyclic rings or ring systems
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Organic Chemistry
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Pharmaceuticals Containing Other Organic And Inorganic Compounds
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