3-ethyl-4-formyl-5-methyl-pyrrole-2-carboxylic acid ethyl ester

乙醇钠

(4-ethyl-5-bromo-3-methyl-pyrrol-2-yl)-(3-ethyl-4,5-dimethyl-pyrrol-2-ylidene)-methane

氢碘酸

醋酸