1,4,10-Trioxa-7,13-diazacyclopentadecane, 7,13-bis(2,8-dichloro-1H-purin-6-yl)- 149246-39-9 1H-Purine, 6,6'-(1,4,10-trioxa-7,13-diazacyclopentadecane-7,13-diyl)bis(2,8-dichloro- 6,6'-(1,4,10-Trioxa-7,13-diazacyclopentadecane-7,13-diyl)bis(2,8-dichloro-1H-purine)