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Problem 4: Determine the correct structure from the provided structures and write this structure in the box provided on the NMR spectrum. Students are provided the 'H and C NMR data to use as additional information to solve this problem. CHO ver Structure A Structure B Structure C Structure D Draw the correct structure in the provided box for full credit 'H NMR HA H. Ho HE 9.4 ppm 6.6 ppm 2.3 ppm 2.0 ppm 0.9 ppm Splitting Integration Singlet 8 Quartet Quartet 16 Doublet 24 Triplet 24 C13 195 ppm 149 ppm 146 ppm 17 ppm 15 ppm 13 ppm DEPT-135 Positive No signal Positive Negative Positive Positive HA He He Ho HE 11 10 9 T 8 T 7 T 6 4 NE 1 1 00 3 0 ppm