dibenzyl 2,7-bis(2-acetoxyethyl)-5-phenyl-3,8-dimethyldipyrrylmethane-1,9-dicarboxylate

3-ethoxycarbonylmethyl-2,4-dimethylpyrrole

3-ethoxycarbonylmethyl-4-methyl-5-benzoylpyrrole-2-carboxylic acid

benzyl 3-(ethoxycarbonylmethyl)-4-methyl-5-(1-hydroxybenzyl)pyrrole-2-carboxylate

benzyl 3-ethoxycarbonylmethyl-4-methyl-5-benzoylpyrrole-2-carboxylate