3,4-bis-(3,4,5-trimethoxyphenyl)-1H-pyrrole-2,5-dicarboxylic acid dimethyl ester
dimethyl 3,4-bis(3,4-dimethoxyphenyl)-1H-pyrrole-2,5-dicarboxylate
dimethyl 3,4-bis(3-methoxyphenyl)-1H-pyrrole-2,5-dicarboxylate
3,4-bis(4-methoxyphenyl)-1H-pyrrole-2,5-dicarboxylic acid dimethyl ester
methyl 7,8-dimethoxy-3-(2-(3,4-dimethoxyphenyl)ethyl)-1-(3,4-dimethoxyphenyl)-[1]-benzopyrano[3,4-b]pyrrol-4(3H)-one-2-carboxylate