cycloheptyne

5,6,7,8-tetraphenyl-1,1a,2,3,4,8b-hexahydrobenzo[a]cyclopropa[c][7]annulene

cyclohexyne

1,2,3,4-tetraphenylbicyclo[2.2.1]hept-2-en-7-one

5-methyl-1,2,3,4-tetraphenylnaphthalene