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