IUPAC:2-amino-9-[(2R,3R,4S,5R)-5-[(hydrogen phosphonatooxy)methyl]-3,4-dihydroxyoxolan-2-yl]-7-methyl-6-oxo-6,9-dihydro-3H-purin-7-ium
IUPAC:2-amino-9-[(2R,3R,4S,5R)-5-[(hydrogen phosphonatooxy)methyl]-3,4-dihydroxyoxolan-2-yl]-7-methyl-6-oxo-6,9-dihydro-3H-purin-7-ium