[((2S,4R)-2-tert-Butoxycarbonylamino-4-methyl-octanoyl)-methyl-amino]-acetic acid methyl ester

({(2S,4R)-2-[(S)-2-[((S)-2-tert-Butoxycarbonylamino-4-methyl-pentanoyl)-methyl-amino]-3-(1-methoxy-1H-indol-3-yl)-propionylamino]-4-methyl-octanoyl}-methyl-amino)-acetic acid methyl ester