异丙叉丙酮

4-hydroxy-2,4-dimethyl-pent-2-enal

1,3,3,4-tetramethyl-4-(2-methylprop-1-en-1-yl)cyclohex-1-ene

3,5,5-trimethylfuran-2-one

2,4-二甲基-2-戊烯