N-{8-[({3-[(4S)-6,8-dichloro-2-methyl-1,2,3,4-tetrahydroisoquinolin-4-yl]phenyl}dioxo-λ6-sulfanyl)amino]-3,6-dioxaoct-1-yl}-1-({1-[({3-[(4S)-6,8-dichloro-2-methyl-1,2,3,4-tetrahydroisoquinolin-4-yl]phenyl}dioxo-λ6-sulfanyl)amino]-10,17,28-trioxo-9,11,16,18,27,29-hexaza-3,6,21,24-tetraoxatritriacont-33-yl}amino)methanamide