2-{[2-(2-{2-[(2-{2-[(2-tert-butoxycarbonylamino-4-methyl-pentanoyl)-methyl-amino]-3-phenyl-propionylamino}-octanoyl)-methyl-amino]-propionyloxy}-propionylamino)-octanoyl]-methyl-amino}-4-methyl-pentanoic acid tert-butyl ester

(S)-2-[((S)-2-{(S)-2-[(S)-2-((S)-2-tert-Butoxycarbonylamino-4-methyl-pentanoylamino)-4-methyl-pentanoylamino]-3-methyl-butyrylamino}-4-methyl-pentanoyl)-methyl-amino]-3-phenyl-propionic acid methyl ester