¹H NMR (400 MHz, CDCl₃) δ 8.83 (d, J = 2.2 Hz, 2H), 8.05 (t, J = 2.2 Hz, 1H), 7.69-7.62 (m, 4H), 7.49-7.53 (m, 4H), 7.46-7.40 (m, 2H). ¹³C{H} NMR (101 MHz, CDCl₃) δ 146.9, 137.7, 136.6, 132.8, 129.1, 128.2, 127.2。