5,5'-bis(benzyloxycarbonyl-4,4'-dimethyl-3,3'-diethyl-2,2'-dipyrrolyl)methane

benzyl 5-(acetoxymethyl)-4-ethyl-3-methyl-1H-pyrrole-2-carboxylate

benzyl 4-ethyl-3,5-dimethylpyrrole-2-carboxylate

3-乙基-2,4-戊二酮

4-乙基-3,5-二甲基-1H-吡咯-2-甲酸乙酯