ethyl 4-[1-(5-ethoxycarbonyl-2,4-dimethyl-1H-pyrrol-3-yl)ethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate

2-ethyl-3-hydroxybutanal

2,4-二氰基-3-甲基戊二酰胺

硝溴生

α-二甲基氨基丙腈