4,7-bis(2-nitrophenyl)isobenzofuran-1,3-dione

3,6-bis(2-nitrophenyl)phthalimide

3-hydroxy-4,7-bis(2-nitrophenyl)isoindolin-1-one

dimethyl 3,6-bis(2-nitrophenyl)phthalate

2-(tetrahydropyran-2-yl)-4,7-bis(2-nitrophenyl)isoindol-1-one