[(2r,3s,4r,5r)-5-(6-amino-9h-purin-9-yl)-4-hydroxy-3-(phosphonooxy)tetrahydro-2-furanyl]methyl (3r)-3-hydroxy-2,2-dimethyl-4-{[3-(methylamino)-3-oxopropyl]amino}-4-oxobutyl dihydrogen diphosphate (non-preferred name)