(pivaloyloxy)methyl (4R,5S,6S)-4-methyl-7-oxo-3-(((R)-5-oxo-1-(triethylsilyl)pyrrolidin-3-yl)thio)-6-((R)-1-((triethylsilyl)oxy)ethyl)-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate
263020-34-4