(S)-2-[(R)-2-[(S)-2-(3-Benzyloxycarbonylamino-propyl)-4-((S)-1-methylcarbamoyl-2-naphthalen-2-yl-ethyl)-3-oxo-piperazin-1-yl]-1-(4-fluoro-benzyl)-2-oxo-ethylcarbamoyl]-piperidine-1-carboxylic acid tert-butyl ester

{3-[(S)-1-{(R)-2-[(S)-2-Acetylamino-3-(1-trityl-1H-imidazol-4-yl)-propionylamino]-3-phenyl-propionyl}-4-((S)-1-methylcarbamoyl-2-naphthalen-2-yl-ethyl)-3-oxo-piperazin-2-yl]-propyl}-carbamic acid benzyl ester

{3-[(S)-1-[(R)-2-[(S)-2-Acetylamino-3-(1-trityl-1H-imidazol-4-yl)-propionylamino]-3-(4-fluoro-phenyl)-propionyl]-4-((S)-1-methylcarbamoyl-2-naphthalen-2-yl-ethyl)-3-oxo-piperazin-2-yl]-propyl}-carbamic acid benzyl ester