Please show work

8. (11) Below are given the 1H and 13C NMR spectra of a compound having molecular formula C9H8Cl2O. a. (3) Calculate the degree of unsaturation of the compound. SHOW YOUR WORK. b. (8) In the space provided, draw the structure of the compound. If you are not able to determine the entire structure, show whatever partial structures you are able to determine. You do not need to assign the protons. You need only provide one answer. A star means a peak points upright in the DEPT-135. \begin{tabular}{|l|l|c|} \hline \multicolumn{2}{|c|}{ Characteristic Proton Chemical Shifts } \\ \multicolumn{2}{|c|}{ Chemical shift } \\ Type of Proton \end{tabular} 13 C. NMR Chemical Shift Correlations = proton exchanges with D2O