英文别名
                        (6R)-3-(1-methyl-1H-tetrazol-5-ylsulfanylmethyl)-8-oxo-7t-[(R)-2-phenyl-2-(thiophene-2-carbonylamino)-acetylamino]-(6rH)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid;3-[(1-methyltetrazol-5-yl)sulfanylmethyl]-8-oxo-7-[[(2R)-2-phenyl-2-(thiophene-2-carbonylamino)acetyl]amino]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid