β-carene

(1R,5S)-1,4,4-trimethylbicyclo<3.2.1>oct-2-ene-8-on

(1R,6S)-3,8,8-trimethylbicyclo<4.1.1>oct-2-ene-7-on

(+)-对薄荷-2,8-二烯 (3R,6R)-3-异丙烯基-6-甲基环己烯

(1R,6S)-7,7-dimethyl-4-methylidenebicyclo[4.1.0]heptan-5-one