4-Nitrobenzyl (4R,5S,6S)-6-[(1R)-1-hydroxyethyl]-3-[2-(4-imidazolyl)ethylthio]-4-methyl-7-oxo-1-azabicyclo[3.2.0] hept-2-ene-2-carboxylate 生成
sodium (4R,5S,6S)-6-[(1R)-1-hydroxyethyl]-3-[2-(4-imidazolyl)ethylthio]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-carboxylate