N-<Nα-<4(S)-<(tert-butyloxycarbonyl)amino>-3(S)-hydroxy-6-methylheptanoyl>-L-isoleucyl>-2-pyridylmethylamine

(S)-2-{(S)-1-[(S)-1-[(S)-1-((S)-1-Hydroxy-2-{(1S,2S)-2-methyl-1-[(pyridin-2-ylmethyl)-carbamoyl]-butylcarbamoyl}-ethyl)-3-methyl-butylcarbamoyl]-2-(1H-imidazol-4-yl)-ethylcarbamoyl]-2-phenyl-ethoxymethyl}-pyrrolidine-1-carboxylic acid tert-butyl ester

((S)-1-{(S)-2-(3H-Imidazol-4-yl)-1-[(S)-3-methyl-1-(2-{(1S,2S)-2-methyl-1-[(pyridin-2-ylmethyl)-carbamoyl]-butylcarbamoyl}-acetyl)-butylcarbamoyl]-ethylcarbamoyl}-2-phenyl-ethyl)-carbamic acid tert-butyl ester