¹H NMR (400 MHz, CDCl₃) δ 8.19-8.12 (m, 4H), 7.88 (d, J = 8.6 Hz, 1H), 7.54 – 7.42 (m, 5H). ¹³C NMR (101 MHz, CDCl₃) δ 160.4 (d, J = 248.0 Hz), 156.7 (d, J = 2.9 Hz), 145.3, 139.2, 136.2 (d, J = 5.4 Hz), 132.1 (d, J = 9.0 Hz), 129.4, 128.9, 127.7 (d, J = 10.0 Hz), 127.5, 120.0, 119.8 (d, J = 2.9 Hz), 110.5 (d, J = 21.7 Hz).