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