¹H NMR (400 MHz, CDCl₃) δ 8.51 (s, 1H), 8.27 (d, J = 8.6 Hz, 1H), 8.13 (t, J = 7.9 Hz, 2H), 7.93-7.86 (m, 3H), 7.81-7.76 (m, 1H), 7.73 (d, J = 8.1 Hz, 1H), 7.65 (t, J = 7.7 Hz, 1H), 7.45-7.41 (m, 3H). ¹³C NMR (100 MHz, CDCl₃) δ 157.2, 148.4, 136.9, 136.8, 133.9, 133.5, 129.8, 129.7, 128.9, 128.69, 127.8, 127.5, 127.3, 127.2, 126.8, 126.4, 126.3, 125.1, 119.2.