Showing structure for (1s,3ar,3bs,7s,9ar,9br,11r,11as)-1-acetyl-3a,3b,7-trihydroxy-9a,11a-dimethyl-1h,2h,3h,4h,6h,7h,8h,9h,9bh,10h,11h-cyclopenta[a]phenanthren-11-yl (2z)-3,4-dimethylpent-2-enoate