16,17-Didehydro-21-ethyl-4-methyl-7,20-cycloatidane-11-beta,15-beta-diol 26166-37-0 7,20-Cycloatidane-11,15-diol, 16,17-didehydro-21-ethyl-4-methyl-, (11-beta,15-beta)- Denudatine