((S)-2-((S)-4-Benzyl-2-oxo-oxazolidin-3-yl)-1-{(1S,2S)-2-[(S)-2-((S)-4-benzyl-2-oxo-oxazolidin-3-yl)-1-tert-butoxycarbonylamino-2-oxo-ethyl]-cyclopropyl}-2-oxo-ethyl)-carbamic acid tert-butyl ester

((S)-2-((S)-4-Benzyl-2-oxo-oxazolidin-3-yl)-1-{(1R,2R)-2-[(S)-2-((S)-4-benzyl-2-oxo-oxazolidin-3-yl)-1-tert-butoxycarbonylamino-2-oxo-ethyl]-cyclopropyl}-2-oxo-ethyl)-carbamic acid tert-butyl ester