5,6-二甲基-薁

5-降冰片烯-2-羧酸乙酯

3,5,6,7-tetrahydroinden-4-one

2-苄基-2-氮杂双环[2.2.1]-5-庚烯

1,2,3,4-tetraethylcyclopenta-1,3-diene