2,3(1H)-Isoquinolinedicarboxylic acid, 3,4-dihydro-,2-(1,1-dimethylethyl) ester,3-[2-[2-[4-[5-[2-[bis[2-(1,1-dimethylethoxy)-2-oxoethyl]amino]ethyl]-8-[2-(1,1-dimethylethoxy)-2-oxoethyl]-12,12-dimethyl-3,10-dioxo-11-oxa-2,5,8-triazatridec-1-yl]phenyl]acet