¹H NMR (400 MHz, CDCl₃) δ 8.78 (s, 2H), 8.03 (s, 1H), 7.48-7.43 (m, 2H), 7.39-7.30 (m, 2H), 7.25-7.07 (m, 4H). ¹³C{H} NMR (101 MHz, CDCl₃) δ 159.7 (d, J = 248.7 Hz), 148.4 (d, J = 3.4 Hz), 136.4 (d, J = 3.3 Hz), 131.2 (d, J = 1.6 Hz), 130.4 (d, J = 3.1 Hz), 130.0 (d, J = 8.3 Hz), 125.2 (d, J = 13.6 Hz), 124.6 (d, J = 3.7 Hz), 116.2 (d, J = 22.4 Hz)。