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The hydrocarbon shown below has three methyl groups with H-NMR shifts of 0.85, 1.27 and 1.63 ppm. Assign the appropriate chemical shift to each

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The hydrocarbon shown below has three methyl groups with H-NMR shifts of 0.85, 1.27 and 1.63 ppm. Assign the appropriate chemical shift to each methyl group. Briefly explain, justifying your choice at the molecular level (i.e. based on the structure). *

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