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