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7-chloro-3,10-diphenyl(1,2,4)triazino(4,3-a)benzimidazol-4(10H)-one [Supplementary Concept]
structure in first source
Date introduced: May 23, 2012
8-methyl-7,10-diphenyl-5H-benzo(h)pyrazolo(3,4-b)quinoline-5,6(10H)-dione [Supplementary Concept]
Date introduced: June 30, 2010