This question is similar in format to the questions on the homework assignment and quiz for this week. 1) Calculate the degree of unsaturation. 2) Assign the principal IR absorption bands above 1500cm1 3) Draw the structure of the compound 4) Using letters to label atoms, correlate the protons on your structure to the peaks on the NMR spectrum (see the example below). 5) Paste the image into the answer box, using the "Upload Media" button (fourth from the right in the controls for the answer box). The compound has the formula C4H10O. Here are its spectra