苯并[a]蒽

萘并[1,2-a]蒽

bicyclo[16.4.0]docosa-1,3,5,7,9,11,13,15,17,19,21-undecaene

bicyclo[12.4.0]octadeca-1,3,5,7,9,11,13,15,17-nonaene

苯并[k]荧蒽