醋酸

5,5'-dicarboxy-3,3'-bis-(2-carboxyethyl)-4,4'-dimethyldipyrrylmethane

3-乙基-4-甲基-1H-吡咯

3,3'-diethyl-4,4'-bis-(2-carboxy-ethyl)-5,5'-methanediyl-bis-pyrrole-2-carboxylic acid

乙醇