Keywords: Heptalene-3D-spacefill.png Space-filling model of the heptalene molecule a polycyclic hydrocarbon without aromatic properties Colour code 505050 Grey Carbon C<br> F0F0F0 Hydrogen H white<br> 2011-01-22 own DS Visualizer Jynto talk Ball-and-stick version cc-zero Heptalene Images by Jynto Space-filling models |