(S)-1-((S)-2-{(S)-2-[(S)-2-(9H-Fluoren-9-ylmethoxycarbonylamino)-3-phenyl-propionylamino]-3-methyl-butyrylamino}-4-methyl-pentanoyl)-pyrrolidine-2-carboxylic acid tert-butyl ester

N-Fmoc-L-Pro-L-Phe-L-Val-L-Leu-L-Pro-O-(t-Bu)

(S)-1-((S)-2-{(S)-2-[(S)-2-({(S)-1-[(S)-3-Carbamoyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)-propionyl]-pyrrolidine-2-carbonyl}-amino)-3-phenyl-propionylamino]-3-methyl-butyrylamino}-4-methyl-pentanoyl)-pyrrolidine-2-carboxylic acid tert-butyl ester