5-benzylidene-2-(4-nitroanilino)-1,3-thiazol-4-one

1-(4-nitrophenyl)imidazolidin-2-one

methyl 4-[(4-nitrophenyl)carbamoyl]benzoate

1-methyl-3-(4-nitrophenyl)pyrrole-2,5-dione

4-nitro-N-[[5-[2-[3-[(4-nitrophenyl)hydrazinylidene]indol-5-yl]ethyl]indol-3-ylidene]amino]aniline