2,6-diphenylpyrrolo[3,4-f]isoindole-1,3,5,7-tetrone

2,6-bis(2-ethylhexyl)pyrrolo[3,4-f]isoindole-1,3,5,7-tetrone

2-(2-ethylhexyl)-6-((4-methoxy-3,5-dimethylpyridin-2-yl)methyl)pyrrolo[3,4-f]isoindole-1,3,5,7(2H,6H)-tetraone

tetraethyl benzene-1,2,4,5-tetracarboxylate

5-(4-methylbenzoyl)benzene-1,2,4-tricarboxylic acid