3-(2-amino-3-methylbutanamido)-3-({13-benzyl-4-[2-({4-carbamimidamido-1-[(carboxymethyl)carbamoyl]butyl}carbamoyl)pyrrolidine-1-carbonyl]-10-(2-carbamoylethyl)-7-(carbamoylmethyl)-16-[(4-hydroxyphenyl)methyl]-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentaazacycloicosan-19-yl}carbamoyl)propanoic acid