2-(4-nitrophenyl)-5-phenyl-1,3,4-oxadiazole

4-硝基苯甲酸丁酯

N-benzyl-4-nitrobenzamide

(4-methoxycarbonylphenyl)-(4-methoxycarbonylphenyl)imino-oxidoazanium

methyl p-nitrosobenzoate