SOLVED: what is the the structure? molecular formula: C9H12O 1H NMR: 5 signals 6.44 (m), 6.03(d), 2.74(m), 1.91(d), 1.23(d) 13C NMR: 8 signals 177.8, 151.9, 133.5, 90.5, 77.5, 21.7 19.9 12.6 IR: 2963, 2240, 1680, 1618 cm-1 1H NMR: 6.44 (1H), 6.03 (1H ...