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Provide a structure for the compound with molecular formula C10H12O2 and with the following spectroscopic data.
IR: 1680 cm−1, 2750 cm−1, 2850 cm−1
1H NMR: 1.1 (triplet, 3H), 3.5 (quartet, 2H), 4.5 (singlet, 2H), 7.3 (doublet, 2H), 7.7 (doublet, 2H), 9.9 (singlet, 1H)
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