Showing structure for butyl 6-{3,4-dihydroxy-3a,6,6,9a,11a-pentamethyl-7,10-dioxo-1h,2h,3h,4h,5h,5ah,8h,9h,11h-cyclopenta[a]phenanthren-1-yl}-2-methyl-4-oxoheptanoate