(6R,7R)-3-Acetoxymethyl-7-{2-[5-(2-chloro-phenyl)-furan-2-yl]-acetylamino}-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid 、
1-甲基-5-巯基-1H-四氮唑 生成 (6R,7R)-7-{2-[5-(2-Chloro-phenyl)-furan-2-yl]-acetylamino}-3-(1-methyl-1H-tetrazol-5-ylsulfanylmethyl)-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid