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Which one of the following compounds produced the IR spectrum shown below? Circle one. Most important clue: Molecular formula of an unknown compound found to be C_6 H_5 NO_2. IR spectra showed the following signals: 2890 (m), 2,250, 1,740 (s), 1,220, 1100, 700, and 650 CM^-1. Determine the structure of the compound if the ^1 H- NMR spectra of the compound is as follows.
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