spiro[2.4]hepta-4,6-diene [endo-cyclopropanespiro-5-(tricyclo[5.2.1.02,6]deca-3,8-diene)-10-spirocyclopropane]

1,4-dichloro-2,3-dimethoxybenzene

3-环戊烯-1-醇

5-降冰片烯-2-甲醛