(+-)Cis-2'-guanin-9-ylmethyl-4'-hydroxymethyl-1',3'- dioxolane (+-)Trans-2'-guanin-9-ylmethyl-4'-hydroxymethyl-1',3'- dioxolane 2-Amino-9-((4-(hydroxymethyl)-1,3-dioxolan-2-yl)methyl)-9H-purin-6-ol AIDS-160839 AIDS160839 NSC653493 NSC653494