9,9'-{(2r,3r,3ar,7ar,9r,10r,10ar,25ar,27r,28r,28ar,32ar,35ar,39ar)-9-(6-amino-9h-purin-9-yl)-34-[(4-amino-5h-pyrrolo[3,2-d]pyrimidin-7-yl)methyl]-5,12,23,30,37-pentahydroxy-3,10,28-trimethoxy-5,12,23,30,37-pentaoxidotetracosahydro-2h,7h,25h-trifuro[3,2-f:3',2'-l:3'',2''-x]pyrrolo[3,4-r][1,3,5,9,11,15,17,21,23,27,29,2,4,10,16,22,28]undecaoxazapentaphosphacyclopentatriacontine-2,27-diyl}bis(2-amino-3,9-dihydro-6h-purin-6-one)