Acetic acid (2R,3R,4R,5R)-4-acetoxy-5-acetoxymethyl-2-(2-acetylamino-6-oxo-1,6-dihydro-purin-9-yl)-tetrahydro-furan-3-yl ester
N(2),O(2'),O(3'),O(5')-tetraacetylguanosine
(2R,3R,4R,5R)-2-(2-acetamido-6-methoxy-9H-purin-9-yl)-5-(acetoxymethyl)tetrahydrofuran-3,4-diyl diacetate