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