(Solved): Next, the data of the signals of an NMR spectrum of an unknown foal with molecular formula c8h10o a ...

Next, the data of the signals of an NMR spectrum of an unknown foal with molecular formula c8h10o are presented. What is the structure of the unknown \( 1.5 \mathrm{ppm} \)-doublet \( 2.5 \mathrm{ppm} \)-singlet, \( 1 \mathrm{H} \) \( 5 \mathrm{ppm} \) quartet, \( 1 \mathrm{H} \) \( 7.2 \mathrm{ppm} \)-multiplet \( 5 \mathrm{H} \)