[(S)-2-((S)-4-Benzyl-2-oxo-oxazolidin-3-yl)-1-(3-isopropoxy-phenyl)-2-oxo-ethyl]-carbamic acid tert-butyl ester

[(R)-1-{[(S)-{(R)-2-(tert-Butyl-dimethyl-silanyloxy)-1-[3-(tert-butyl-dimethyl-silanyloxy)-phenyl]-ethylcarbamoyl}-(3-isopropoxy-phenyl)-methyl]-carbamoyl}-2-(4-fluoro-3-nitro-phenyl)-ethyl]-carbamic acid tert-butyl ester