Showing structure for (2e,6r)-6-[(1r,3ar,5ar,9ar,9bs,11ar)-3a,6,6,9a,11a-pentamethyl-7-oxo-1h,2h,3h,5h,5ah,8h,9h,9bh,10h,11h-cyclopenta[a]phenanthren-1-yl]-2-methyl-4-oxohept-2-enoic acid