738618-06-9

1-Azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid,6-[(1R)-1-hydroxyethyl]-3-[[4-(methoxycarbonyl)-5-thiazolyl]thio]-7-oxo-,(2,2-dimethyl-1-oxopropoxy)methyl ester, (5R,6S)-