Showing structure for (3r,5ar,5br,7as,11as,11br,13as,13br)-3-isopropyl-5a,5b,8,8,11a,13b-hexamethyl-1h,2h,3h,5h,6h,7h,7ah,9h,10h,11h,11bh,12h,13h,13ah-cyclopenta[a]chrysene