Showing structure for (1s,3ar,5ar,5bs,7ar,9s,11as,13ar,13br)-1-isopropyl-3a,5b,8,8,11a-pentamethyl-1h,2h,3h,4h,5h,5ah,6h,7h,7ah,9h,10h,11h,13h,13ah,13bh-cyclopenta[a]chrysen-9-yl acetate