1-(4-nitrophenyl)-3-(1,3,4-thiadiazol-2-yl)urea

(4-methoxyphenyl)methyl N-(4-nitrophenyl)carbamate

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

1-(6-benzoyl-1H-benzimidazol-2-yl)-3-(4-nitrophenyl)urea

pentyl N-(4-nitrophenyl)carbamate