英文别名
                        (6R)-7t-{(RS)-2-chloroacetoxy-2-[4-(4-nitro-benzyloxycarbonyl)-phenyl]-acetylamino}-3-(5-methyl-[1,3,4]thiadiazol-2-ylsulfanylmethyl)-8-oxo-(6rH)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid;7-[[2-(2-chloroacetyl)oxy-2-[4-[(4-nitrophenyl)methoxycarbonyl]phenyl]acetyl]amino]-3-[(5-methyl-1,3,4-thiadiazol-2-yl)sulfanylmethyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid