1,2-Cyclopentanediol, 3-(aminomethyl)-5-(6-amino-9H-purin-9-yl)-, (1a,2b,3a,5a)- 118237-78-8 AIDS-001020 AIDS001020 C-2',3'-OH-4'-NH2 ara-A Carbocyclic-2',3'-OH-4'-NH2 ara-adenosine NSC613820