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9.42 (s, H3), 8.52-8.40 (m, 4H), 8.39 (d, H5, J ) 3.3 Hz),8.08-7.96 (m, 4H), 7.87 (t, 2H, J ) 5.5 Hz), 7.78 (d, 1H, J ) 5.5 Hz), 7.69 (d, H6, J ) 3.3 Hz), 7.55 (d, 1H, J ) 5.5 Hz), 7.44-7.31 (m, 4H) ppm.
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10.38 (br, 2H, Hh, Hg), 9.32 (d, 1H, J = 8.0, Ha), 9.22 (d, 1H, J = 8.5, Hf), 9.16 (d, 1H, J = 8.0, Hc), 9.01 (d, 1H, J = 8.0, Hd), 7.88 (t, 1H, J = 7.5, Hb), 7.81 (t, 1H, J = 7.5, He).
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