651059-34-6

5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid,3-[(1E,3S)-3-amino-4-hydroxy-1-butenyl]-7-[[(1,1-dimethylethoxy)carbonyl]amino]-8-oxo-, (4-methoxyphenyl)methyl ester, (6R,7R)-