The following spectroscopic data below corresponds to an unknown
carbonyl compound with the molecular formula C8H12O. Deduce and
draw the structure of the compound that corresponds to the data.
The letter ""m"" refers to an uninterpretable multiplet in the
spectra. 1H NMR: δ 0.94 (t, 3H), 1.48 (sextet, 2H), 2.21 (q,
2H), 5.8-7.1 (m, 4H), and 9.56 (d, 1H) ppm. 13C NMR: δ 13.6, 21.9,
35.2, 129.0, 135.2, 146.7, 152.5, 193.2 ppm.