429663-87-6

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