917470-43-0

5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid,3-[[[[(1,1-dimethylethyl)dimethylsilyl]oxy](1-oxooctyl)amino]methyl]-8-oxo-7-[(2-phenylacetyl)amino]-, (4-methoxyphenyl)methyl ester, (6R,7R)-