对甲氧基苯胺

甲氧基亚甲基马来酸二甲酯

methyl 3-carbomethoxy-3-(4'-methoxyphenyl)amino-2-propenoate

dimethyl 6-methoxy-4-oxo-1,4-dihydroquinoline-2,3-dicarboxylate

4,5-dimethoxycarbonyl-1-(4'-methoxyphenyl)-1H-pyrrole-2,3-dione