((2R,3S,4S,5R)-5-(6-amino-2-ethoxy-9H-purin-9-yl)-3,4-dihydroxytetrahydrofuran-2-yl)methyl dihydrogen phosphate;2-Ethoxy-9-(5-O-phosphono-?-D-arabinofuranosyl)-9H-purin-6-amine
((2R,3S,4S,5R)-5-(6-amino-2-ethoxy-9H-purin-9-yl)-3,4-dihydroxytetrahydrofuran-2-yl)methyl dihydrogen phosphate;2-Ethoxy-9-(5-O-phosphono-?-D-arabinofuranosyl)-9H-purin-6-amine