The m/z of the M+ peak of an unknown is 146, and this peak is the base peak (i.e., the tallest peak). (See below mass spectrum of the unknown.) Combustion analysis data indicate 49.03% carbon and 2.74% hydrogen. The IR spectrum and 13C-NMR spectrum of this compound also were obtained and are shown below. Given this information, what is the name of this unknown molecule? MASS SPECTRUM 100 80 60 面 40 20 0.0 120 160 40 80 0.0 m/z INFRARED SPECTRUM 0.8 0.6 0.4 2000 1000 3000 Wavenumber (cm-1) Wavenumber (cm-1) 13C-NMR Spectrum of Unknown 140 120 100 80 60 40 20 PPM The m/z of the M+ peak of an unknown is 146, and this peak is the base peak (i.e., the tallest peak). (See below mass spectrum of the unknown.) Combustion analysis data indicate 49.03% carbon and 2.74% hydrogen. The IR spectrum and 13C-NMR spectrum of this compound also were obtained and are shown below. Given this information, what is the name of this unknown molecule? MASS SPECTRUM 100 80 60 面 40 20 0.0 120 160 40 80 0.0 m/z INFRARED SPECTRUM 0.8 0.6 0.4 2000 1000 3000 Wavenumber (cm-1) Wavenumber (cm-1) 13C-NMR Spectrum of Unknown 140 120 100 80 60 40 20 PPM