Name: (2R,3S,4R,5R)-5-(2-AMINO-6-OXO-3H-PURIN-9-YL)-3,4-DIHYDROXYOXOLAN-2-YL]METHYL [[[(2R,3S,4R,5R)-5-(6-AMINOPURIN-9-YL)-3,4-DIHYDROXYOXOLAN-2-YL]METHOXY-