2-(4-硝基苯基)丙烷-1,1,3,3-四羧酸四乙酯

diethyl 3-oxocyclopentane-1,1-dicarboxylate

5-Methyl-2-nitro-4-(trifluoromethyl)aniline

2-(1,3-diethoxy-1,3-dioxopropan-2-yl)-4-nitrobenzoic acid

2-(1,3-dimethoxy-1,3-dioxopropan-2-yl)-4-nitrobenzoic acid