(-)-9-(trans-2,trans-3-Dihydroxy-4-(hydroxymethyl)-cyclopent-4-enyl)-adenine 4-Cyclopentene-1,2-diol, 3-(6-amino-9H-purin-9-yl)-5-(hydroxymethyl)-, (1S,2R,3R)- 72877-50-0 A-11079-B1B NPC-A NSC 316458 Neplanocin A