Deduce the structure of an unknown compound using the following 1H NMR spectrum, mass spectroscopy data, and IR spectrum.
1H NMR spectrum: Mass Spectrum:
δ1.30 (triplet, 6H) m/e: Intensity: (as % of base peak)
δ4.29 (quartet, 4H) 222 10%
δ 7.4–7.9 (multiplet, 4H) 177 38%
Intensity (peak)/Frequency (cm–1): s / 3100, m / 2900, m / 2800, s / 1740, m-w / 1600, m-w / 1475, m / 1465, m / 1450, m / 1375, s / 1300–1000
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