4-ethyl-5-methoxymethyl-3-methylpyrrole-2-carboxylic acid

3-ethyl-2-[(3-ethyl-4-methyl-1H-pyrrol-2-yl)methyl]-4-methyl-1H-pyrrole

2,6-二硝基苯甲醛

3,3'-diethyl-5-formyl-4,4'-dimethyl-2,2'-dipyrromethane

4-ethyl-5-[(3-ethyl-5-formyl-4-methyl-1H-pyrrol-2-yl)methyl]-3-methyl-1H-pyrrole-2-carbaldehyde