4-methoxycarbonyl-3,5-dimethyl-1H-pyrrole-2-carboxylic acid;4-carbomethoxy-3,5-dimethyl-1H-pyrrole-2-carboxylic acid;3,5-Dimethyl-1H-pyrrole-2,4-dicarboxylic acid 4-methyl ester
4-methoxycarbonyl-3,5-dimethyl-1H-pyrrole-2-carboxylic acid