3. The following compound release CO2 and H2O after being heated at 230℃. Draw the structure of the most possible reaction product.(5分)

2. Determine the structure compound CioH 1202 based on the following spectroscopic data.(5分)NMR (δ, ppm): 11, 22, 67, 128, 130, 131, 133, 167; 1H NMR (δ, ppm): 1.02 (triplet, 3H), 1.80 (sextet, 2H), 4.17 (triplet, 2H), 7.12-7.27 (multiplet, 3H), 7.96-8.08 (multiplet, 2H);IR (selected peaks; cm"): 3040, 2950, 1730, 1550, 1450, 1280, 1100, 700.