3-{(1Z,4Z,9Z,15Z)-7,17-Diethyl-3,8,13,18-tetramethyl-12-[2-(4-nitro-phenoxycarbonyl)-ethyl]-porphyrin-2-yl}-propionic acid 4-nitro-phenyl ester
2,4-dimethyl-3-ethyl-pyrrole
4-ethyl-2,3-dimethyl-1H-pyrrole
3-(4,5-dimethyl-pyrrol-3-yl)-propionic acid methyl ester
methyl 2,4-dimethyl-3-pyrrolepropionate