153804-67-2 1H-Isoindole-1,3(2H)-dione, 2,2'-((2-((3,4-dihydro-2H-1-benzothiopyran-8-yl)oxy)ethyl)imino)di(4,1-butanediyl)bis- 8-((2-(N,N-Bis(4-phthalimidobutyl)amino)ethyl)oxy)thiochroman