(R)-2-((S)-1-((2S,5S,8R,11S,14S,17R,20R,23R)-20-(4-chlorobenzyl)-2-(3-guanidinopropyl)-11-(4-hydroxybenzyl)-14-(hydroxymethyl)-5-isobutyl-23-(naphthalen-2-ylmethyl)-4,7,10,13,16,19,22,25-octaoxo-17-(pyridin-3-ylmethyl)-8-(3-ureidopropyl)-3,6,9,12,15,18,21,24-octaazahexacosan-1-oyl)pyrrolidine-2-carboxamido)propanoic acid
