英文别名
(6R)-3t-hydroxy-3c-methyl-8-oxo-6t-phthalimido-(6rH)-5-thia-1-aza-bicyclo[4.2.0]octane-2c-carboxylic acid 4-nitro-benzyl ester;(4-nitrophenyl)methyl (2R,3S,6R,7R)-7-(1,3-dioxoisoindol-2-yl)-3-hydroxy-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]octane-2-carboxylate