Given the IR and MS spectra, identify the following unknown with molecular formula (C6H11BrO2)

4. Given the IR and MS spectra, identify the following unknown with molecular formula (C6H11BrO2). a. Calculate the hydrogen deficiency index. b. To what do the IR absorptions at 2987,1760 , and 591cm1 correspond? c. To what do the MS fragments at m/z=166/168,149/151,121/123, and 88 correspond? d. What does the intensities of the peaks at m/z=166/168,149/151, and 121/123 indicate? Propose a structure consistent with this information. Given the IR and MS spectra, identify the following unknown with molecular formula (C6H11BrO2)