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