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Give the structure of a compound that has a formula of C8H10O2 and has signals in the 13C NMR spectrum at 54.8 ppm (CH3) , 63.3 ppm (CH2) , 113.6 ppm (CH) , 128.3 ppm (CH) , 134.11 ppm (C) , and 158.6 ppm (C) .
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