4-acetyl-5-((4-acetyl-5-carboxy-3-methyl-1H-pyrrol-2-yl)methyl)-3-methyl-1H-pyrrole-2-carboxylic acid

戊-3-炔-2-酮

3-(5-benzyloxycarbonyl-2-bromomethyl-4-methyl-pyrrol-3-yl)-propionic acid methyl ester