Using the following spectral information, determine the name of unknown organic compound A. For full credit, explain why/how the spectral information led you to your answer.
Mass spectrometer: Molecular ion of 148 m/z
IR: strong absorption between 2800 and 3000 cm-1, strong absorption at 3050 cm-1, and strong absorption between 1400 and 1600 cm-1
NMR: singlet at 2.5 delta units with integration of 3, singlet at 2.0 delta units with integration 9, 2 sets of doublets between 7.0 and 8.0 delta units with integration of 2 each