(S)-1-(((R)-2-((S)-2-((S)-2-((S)-2-((S)-3-(1H-imidazol-5-yl)-2-((S)-5-oxopyrrolidine-2-carboxamido)propanamido)-3-(1H-indol-3-yl)propanamido)-3-hydroxypropanamido)-3-(4-hydroxyphenyl)propanamido)-3,3-dimethylbutanoyl)-L-leucyl-L-arginyl)-N-ethylpyrrolidine-2-carboxamide acetate salt.
