## Question

###### NMR/Compound B33387.5 7.44 7.3 7.2 7.1 7.0 6.9 6.8 chemical shift (ppm)9.08.58.07.57.06.56.0 5.5 5.0 4.5 4.0 chemical shift (ppm)3.53.02.52.01.51.0

NMR/Compound B 3338 7.5 7.44 7.3 7.2 7.1 7.0 6.9 6.8 chemical shift (ppm) 9.0 8.5 8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 chemical shift (ppm) 3.5 3.0 2.5 2.0 1.5 1.0

## Answers

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