'H NMR (400 MHz, CHCl2) 68.86 (s, 1 H), 8.33 (s, 1 H), 8.06 (brs, 1 H), 7.85 (ABq, J–6.8 Hz, Av=188.8 Hz, 4 H), 7.35 (ABq, J–8.2 Hz, Av=170.20 Hz, 4 H), ...
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