11.50 (d, J = 2.0 Hz, 1H), 8.58 (dd, J = 8.2, 3.9 Hz, 2H), 7.63 (s, 1H), 7.35–7.43 (m, 2H), 7.31 (d, J = 1.8 Hz, 1H), 7.27 (t, J = 7.6 Hz, 2H), 7.17 (t, J