917470-57-6

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