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