Determine the chemical structure for the unknown with the following IR and NMR data.

Spectroscopy Unknown. The spectra and data provided were obtained from a pure organic molecule. For 1H NMR Spectra, the integral is given in number of hydrogens (#H) or as a relative ratio. Important coupling constants (J-values) are listed next to the peaks for some examples. For some spectra, an inset (grey box) is also given showing a "zoom-in" on an important part of the spectrum. Mass Spectrum (not shown): [M]=104(100%)m/z IR Spectrum (not shown): 2981, 1331cm1 (all listed are strong (s) unless otherwise indicated) 1HNMRSpectrum(400MHz,CDCl3,25C) 13C NMR Spectrum, proton-decoupled (125MHz,CDCl3,25C)