(S)-2-(4-Methoxy-benzyloxy)-4-methyl-pentanoic acid (E)-(1S,2R)-1-[2-(tert-butyl-diphenyl-silanyloxy)-ethyl]-2-methyl-4-phenyl-but-3-enyl ester

3-[(R)-2-[2-(Diethoxy-phosphoryl)-acetylamino]-3-(4-methoxy-phenyl)-propionylamino]-propionic acid