[(1S,2R)-3-((2R,3S)-3-tert-Butoxycarbonylamino-2-hydroxy-4-phenyl-butylamino)-2-hydroxy-1-phenethyl-propyl]-carbamic acid benzyl ester

(1S,2R)-(3-amino-1-benzyl-2-hydroxy-propyl)-carbamic acid tert butyl ester