Showing structure for (3as,5ar,9ar,9br)-3a,3b,6,6,9a-pentamethyl-1-[(2s)-6-methylhept-5-en-2-yl]-2h,3h,4h,5h,5ah,8h,9h,9bh,10h,11h-cyclopenta[a]phenanthren-7-one