Q4/1 S S 204.9 d Me OH a er 162.2 136.5 120.0 118.2 131.3 119.2 ppm Use the above proton - decoupled Bc spectrum to deduce whether it belongs to compound or compound Ⓒ. The multiplicity of these signals in the off-resonance Bc spectrum is shown as a letter. 26.6 Дре OH H 0

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