試卷名稱:114年 - 114 國立中興大學_公費生招生考試_學士後醫學系:化學#126482
年份:114年
科目:學士後西醫-化學
11.A chemist attempted to synthesize the ethyl ester of 2-formylbenzoic acid, but the spectral data of the product did not match her expectations. The IR spectrum of product Z showed an ester carbonyl absorption, but no aldehyde absorption and no OH absorption. The 1H NMR data are provided. What is the structure of Z?

(A) I
(B) II
(C) III
(D) IV
(E) V