5876-23-3 Cevane-3,4,12,14,16,17,20-heptol, 4,9-epoxy-, (3.beta.,4.alpha.,16.beta.)- Cevane-3.beta.,4.beta.,12,14,16.beta.,17,20-heptol, 4,9-epoxy- NSC127570 Protocevine Veracevin Veracevine