3-[(3R,6S,9S,12S,15S)-3-{[(2S)-2-[(3S)-6-carbamoyl-3-(2-methylpropyl)-1,4-dioxo-2,5-diazahex-1-yl]pyrrolidin-1-yl]carbonyl}-6-(carbamoylmethyl)-15-[(4-methoxyphenyl)methyl]-12-(2-methylpropyl)-5,8,11,14,17-pentaoxo-4,7,10,13,16-pentaza-1-thiacycloicosan-9-yl]propanamide