Showing structure for (2s,6r)-6-[(3as,3bs,5as,7s,9as,11as)-7-(acetyloxy)-3a,6,6,9a,11a-pentamethyl-3h,3bh,4h,5h,5ah,7h,8h,9h,11h-cyclopenta[a]phenanthren-1-yl]-2-methyl-4-oxoheptanoic acid