Deduce the structure of each molecule below (4a-) based on the provided NMR spectra. Note: Degree of unsaturation calculations are a valuable first step in this type of structure elucidation Signals not integrated in the full spectrum (0-9+ ppm) are associated with solvent or other contaminants and can be ignored. 4-a. CyH CIO 1 2 7.8 7.6 ppm 10 9 B N- pi 2 2 7.8 7.6 ppm 10 9 8 7 6 5 2 ppm Simo A B D m 4-b. C3H30 assume the signal at 3.97 ppm is a septet (very small outer peaks) 6 4.4 4.2 4.0 3.8 Dpm 1 5 3 2 ppm A D E 4-c. CAH 6 6 ppm A B c D E 4-d. CH Bro The complex splitting patterns observed for the three signals from 6,5-7.5 ppm will be explained in NMR Workshop 2. For now, just note that there are three unique signals in this ppm range and pay attention to the DU calculation for this formula 3 he 3 7.5 7.0 ppm 1 i i 5 2 ppen 7,5 2. Eprn. " ppm OR Br B: Br A C D E