3-[(4R,7S,10S,14R,17S,20R)-4-{[(2S)-2-[(3S)-6-carbamoyl-3-(2-methylpropyl)-1,4-dioxo-2,5-diazahex-1-yl]pyrrolidin-1-yl]carbonyl}-20-amino-14-[(2S)-but-2-yl]-7-(carbamoylmethyl)-17-[(4-hydroxyphenyl)methyl]-6,9,12,16,19-pentaoxo-1,2-dithia-5,8,11,13,15,18-hexazacyclohenicosan-10-yl]propanamide