Showing structure for (2r)-2-[(1r,3ar,5ar,7s,9as,11ar)-7-hydroxy-3a,6,6,9a,11a-pentamethyl-1h,2h,3h,4h,5h,5ah,7h,8h,9h,10h,11h-cyclopenta[a]phenanthren-1-yl]-5,5-dimethoxypentanoic acid