N-[2-[2-[2-[2-[[3-[(4S)-6,8-dichloro-2-methyl-3,4-dihydro-1H-isoquinolin-4-yl]phenyl]sulfonylamino]ethoxy]ethoxy]ethoxy]ethyl]-2-[[2-[2-[2-[2-[2-[[3-[(4S)-6,8-dichloro-2-methyl-3,4-dihydro-1H-isoquinolin-4-yl]phenyl]sulfonylamino]ethoxy]ethoxy]ethoxy]ethylamino]-2-oxo-ethyl]-[(1R,2R)-2-[[2-[2-[2-[2-[2-[[3-[(4S)-6,8-dichloro-2-methyl-3,4-dihydro-1H-isoquinolin-4-yl]phenyl]sulfonylamino]ethoxy]ethoxy]ethoxy]ethylamino]-2-oxo-ethyl]-[2-[2-[2-[2-[[[3-[(4S)-6,8-dichloro-2-methyl-3,4-dihydro-1H-isoquinolin-4-yl]phenyl]sulfonylamino]methoxy]ethoxy]ethoxy]ethylamino]-2-oxo-ethyl]amino]cyclohexyl]amino]acetamide