3-((1S,2R,5S)-4,4-dimethyl-3-oxo-8-(propan-2-ylidene)bicyclo[3.2.1]oct-6-en-2-yl)propanal

2-羟基-5-异丙基-2,4,6-环庚三烯-1-酮

9-异亚丙基-1,4-二甲氧基-苯并降冰片烯

(3-异丙烯基-3-环戊烯-1-基)乙酸

2-propan-2-ylidenecyclopentane-1,3-dione