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Propose a structure for a compound with molecular formula C8H19N that fits the following spectroscopic data.
IR: 3400cm-1
1H NMR: 0.9 (triplet, I=6), 1.1 (singlet, I=1, exchanges with D2O), 1.3 (sextet, I=4), 1.4 (quintet, I=4), 2.6 (triplet, I=4)
13C NMR: 13.7, 20.5, 30.4, 49.2
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