Showing structure for (1r,3as,5ar,5br,7ar,11ar,11br,13as,13br)-5a,5b,8,8,11a-pentamethyl-9-oxo-1-(prop-1-en-2-yl)-1h,2h,3h,4h,5h,6h,7h,7ah,11bh,12h,13h,13ah,13bh-cyclopenta[a]chrysene-3a-carbaldehyde