(S)-2-[(2S,3S)-2-((3S,4S)-4-tert-Butoxycarbonylamino-3-hydroxy-6-methyl-heptanoylamino)-3-methyl-pentanoylamino]-3-phenyl-propionic acid methyl ester

tert-butyl (S)-2-((3S,6S,9S,10S,14S,17S)-6-((1H-imidazol-4-yl)methyl)-3,17-dibenzyl-14-((S)-sec-butyl)-10-hydroxy-9-isobutyl-4,7,12,15,18-pentaoxo-2,19-dioxa-5,8,13,16-tetraazaicosyl)pyrrolidine-1-carboxylate