2,5-Dimethyl-3-isopropyl-2,4-hexadien

1,1,4,4-四甲基丁烷-1,4-二基二乙酸酯

(2,5-dimethyl-3-oxohex-4-en-2-yl) acetate

2-hydroxy-2,5-dimethylhex-4-en-3-one