Synonyms: [(2R,3S,5R)-2-[2-[[(2R,3S,5R)-5-(4-amino-2-oxo-pyrimidin-1-yl)-3-phosphonooxy-tetrahydrofuran-2-yl]methoxy]-2-[(2S,3S,5R)-5-(6-aminopurin-9-yl)-3-hydroxy-tetrahydrofuran-2-yl]ethyl]-5-(6-aminopurin-9-yl)tetrahydrofuran-3-yl] dihydrogen phosphate