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