(S)-2-((S)-2-((S)-2-((S)-2-((4S,7S,10S,13S)-13-((S)-2-amino-5-guanidinopentanamido)-10-sec-butyl-7-isobutyl-6,9,12-trioxo-1,2-dithia-5,8,11-triazacyclotetradecane-4-carboxamido)-5-guanidinopentanamido)-4-methylpentanamido)-4-methylpentanamido)pentanediamide