Naphthalenes+ 18
Spiro Compounds+ 7
Phenanthrenes+ 4
Anthracenes+ 3
Benz(a)Anthracenes+ 3
Indenes+ 3
Fluorenes+ 2
Naphthacenes+ 2
Benzocycloheptenes+ 1
Phenalenes+ 1
Pyrenes+ 1
Azulenes