4,4-dimethyl-8-methylidene-1-oxaspiro[2.5]octane

(2E)-3,7-二甲基-N-苯基辛-2,6-二烯-1-亚胺

4,4,8-trimethyl-1-oxaspiro[2.5]oct-7-ene

N-methyl-1-(2,6,6-trimethylcyclohex-2-en-1-yl)methanimine

2,6,6-三甲基环己-2-烯-1-羧酸