The molecular formula of an unknown compound is C7H13BrO2, The strong peak at 1750 cm^-1  The proton NMR data is, 1.2d(6H, d), 4.2d(1H, t), 2.2d(2H, quintet), 4.93d(1H, septet),1.08d(3H,t).What is the name of the unknown compound?  Isopropyl 2-bromobutanoate 1-bromopropyl isobutyrate ethyl 2-bromo-3-methylbutanoate 1-bromoethyl 3-methylbutanoate

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Q: A. Relative Intensity 100- 80- 40 20- 15-81-0460

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Q: CH,O OCH, CH,O осн II IV Oa V Ob." O.!

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