1. The molecular formula for the following unknown compound is CHO. 'H NMR: 0.93 (3H, t), 1.60 (2H, m), 2.1 (3H, s), 2.4 (2H, t) 3 2 0 PPM Determine the sites of unsaturation Draw the structure and show all hydrogen set. Correlate each set of hydrogens to the appropriate signal. Explain how the chemical shift, integration, and splitting pattern justifies the proposed structure