Solve please

Based in the mass spectrum, the infrared spectrum, the 1H and the 13C NMR spectra, what is the molecular formula of the hydrocarbon that produced these spectra ?

100 Relative Intensity 80 60 40 20- 0-tnt 10 20 30 40 50 60 70 m/z 15.0 18.8 26.0 27.0 20.0 29.0 30.0 39.0 w 40.0 MOX 41.0 W 42.8 43.0 45.0 50.0 51.0 13.0 13.0 54.8 15.0 36.0 57.0 59.0 43.9 44.8 47.8 40.0 65.8 70.0 73.4 11,4 19.4 PL.E 14. 45.0 H. 47.4 91.8 99.0 Jelikojemth 80 90 100 110 W 15.1 4.0 13.7 1.3 1-2 1.2 1.4 19.0 3.1 11.5 10.2 10.3 2.0 1.7 3.3 1.4 16.2 3.4 34.3 27.1 4.0 1.4 1.6 23 1.4 10.4 4.4 100. 18.0 1-4 14 1.5 2.4 18.4 1.5 14 1.8 la 3.0 44.5 3-4 120 The M* peak is at m/z = 98. Part D-Based on the mass spectrum, the infrared spectrum, the 'H and C NMR spectra, what is the molecular formula of the hydrocarbon that produced these spectra? Using complete sentences, explain how you determined the molecular formula,