(3As,4s,6r,6ar)-6-{6-phenethylamino-2-[2-(1-methyl-1h-imidazol-4-yl)-ethylamino]-purin-9-yl}-2,2-dimethyl-tetrahydro-furo[3,4-d][1,3]dioxole-4-carboxylic acid|化工社