Name： 17-(1-Hydroxy-1,5-dimethyl-hex-5-enyl)-4,4,8,10,14-pentamethyl-hexadecahydro-cyclopenta[a]phenanthrene-3,12-diol

C30H52O3
Exact Mass: 460.39
Mol. Wt.: 460.73
m/e: 460.39 (100.0%), 461.40 (34.3%), 462.40 (6.3%)
C, 78.21; H, 11.38; O, 10.42

双键重排反应，提供左边原料。