Showing structure for (3r,3ar,5ar,5br,7as,11as,13as,13bs)-3-isopropyl-3a,5a,8,8,11a,13a-hexamethyl-1h,2h,3h,4h,5h,5bh,6h,7h,7ah,9h,10h,11h,13h,13bh-cyclopenta[a]chrysene