ethyl 5-methyl-3-oxo-2-propan-2-ylhexanoate

2-甲基丁烷酰胺

2-甲基-3-氧代戊酸甲酯

methyl 2,5-dimethyl-3-oxohexanoate

(ar)-4-甲氧基-3-(3-甲氧基丙氧基)-a-(1-甲基乙基)-苯丙酸