17-(3-((S)-6,8-dichloro-2-methyl-1,2,3,4-tetrahydroisoquinolin-4-yl)phenylsulfonamido)-5,5-bis(3-(2-(2-(2-(3-((S)-6,8-dichloro-2-methyl-1,2,3,4-tetrahydroisoquinolin-4-yl)phenylsulfonamido)ethoxy)ethoxy)ethylamino)-3-oxopropyl)-3,8-dioxo-12,15-dioxa-2,4,9-triazaheptadecylphosphonic acid