乙基2-异丙基-3-氧代-4-苯基丁酸酯

propan-2-yl 1-propan-2-yloxynaphthalene-2-carboxylate

ethyl 2,2,3-trimethylbutanoate

propan-2-yl 4-nitrobenzoate

1,3,5-三甲基-2-(1-甲基乙氧基)-苯