(3R,4R)-4-[4-(tert-Butyl-dimethyl-silanyloxy)-phenyl]-1-(4-fluoro-phenyl)-3-phenethylsulfanyl-azetidin-2-one

(S)-3-[(2R,3R)-3-[4-(tert-Butyl-dimethyl-silanyloxy)-phenyl]-3-(4-fluoro-phenylamino)-2-phenethylsulfanyl-propionyl]-4-phenyl-oxazolidin-2-one