(2S,5S,11S,14S)-14-((S)-4-amino-2-((S)-2-decanamido-3-(1H-indol-3-yl)propanamido)-4-oxobutanamido)-5-(3-aminopropyl)-11-((R)-1-hydroxyethyl)-4,7,10,13-tetraoxo-3,6,9,12-tetraazapentadecane-1,2,15-tricarboxylic acid