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NMR Problems (select the structure) Problem 7: 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. nline OH Structure A Structure B Structure C Structure D Draw the correct structure in the provided box for full credit. HA H HC TH NMR 2.8 ppm 2.4 ppm 1.1 ppm Splitting Quartet Singlet Triplet Integration 5 7.5 7.5 C13 200 ppm 198 ppm 29 ppm 24 ppm 7 ppm DEPT-135 No signal No signal Negative Positive Positive HAH, HC 11 10 9 00 7 08- 6 5 3 2 1 0 ppm