AIDS-165579 AIDS165579 [4-({2-[(2-Amino-6-oxohydropurin-9-yl)methoxy]ethyl}oxyphosphinyl)-5-(6-aminopurin-9-yl)-3-hydroxyoxolan-2-yl]methyl 2-(6-aminopurin-9-yl)-4-hydroxy-5-(hydroxymethyl)oxolan-3-yl hydrogen phosphate