10,11-dihydro-9-thia-3:4-benzofluorene S,S-dioxide

4,5-epoxy-2,3,4,5-tetraphenyl-cyclopent-2-enone

1,2,3,4-tetraphenylbut-2-ene-1,4-dione

1,1',1'',1'''-(5-亚甲基-1,3-环戊二烯-1,2,3,4-四基)四苯

1,2,3,4-四苯基-1,3-环戊二烯