(3E,5E,7E)-6-methyl-8-(2,6,6-trimethyl-1-cyclohexenyl)-3,5,7-octatriene-2-one

(4E,6E,8E)-3,7-dimethyl-3-hydroxy-9-(2,6,6-trimethyl-1-cyclohexenyl)-4,6,8-nonatrienenitrile

氰乙酸