methyl 4-(3-(6-amino-9-((2R,3R,4S,5S)-5-(ethylcarbamoyl)-3,4-dihydroxytetrahydrofuran-2-yl)-9H-purin-2-yl)prop-2-yn-1-yl)cyclohexanecarboxylate-D5; trans-4-[3-[6-Amino-9-[N-(ethyl-d5)- -D-ribofuranuronamidosyl)]-9H-purin-2-yl]-2-propyn-1-yl]-cyclohexanecarboxylic Acid Methyl Ester; ATL 146e-d5; BMS 068645-d5; DWH 146e-d5