(16-alpha,17-alpha)-14,21-Cyclo-19-norpregna-1,3,5(10)-triene-3,16,17-triol 135768-83-1 14,21-Cyclo-19-norpregna-1,3,5(10)-triene-3,16,17-triol, (16-alpha,17-alpha)- 14alpha,17alpha-Ethano-1,3,5(10)-estratriene-3,16alpha,17-beta-triol CCRIS 6527 Cyclotriol Zk 136295