5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 7-[[(2R)-hydroxyphenylacetyl]amino]-3-[[(5-methyl-1,3,4-thiadiazol-2-yl)thio]methyl]-8-oxo-, (5-methyl-2-oxo-1,3-dioxol-4-yl)methyl ester, (6R,7R)- 生成 (5-methyl-2-oxo-1,3-dioxol-4-yl)methyl (6R,7R)-7-[[(2R)-2-[2-[(2-methylpropan-2-yl)oxycarbonylamino]acetyl]oxy-2-phenylacetyl]amino]-3-[(5-methyl-1,3,4-thiadiazol-2-yl)sulfanylmethyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate