2-[(2-Amino-6-oxohydropurin-9-yl)methoxy]ethyl 2-(6-aminopurin-9-yl)-5-({[2-(6-aminopurin-9-yl)-4-(diazoazamvinyl)-5-(hydroxymethyl)oxolan-3-yl]phosphinyloxy}methyl)-4-(diazoazamvinyl)oxolan-3-yl hydrogen phosphate AIDS-165580 AIDS165580