¹H NMR (400 MHz, CDCl₃) δ 7.65 (d, J = 5.3 Hz, 1H), 7.33 – 7.28 (m, 1H), 7.18 – 6.97 (m, 7H), 6.63 (s, 1H), 5.61 (s, 1H), 5.41 (s, 1H). ¹³C NMR (101 MHz, CDCl₃) δ 162.94 (d, J = 246.5 Hz), 143.91, 136.33, 130.13 (d, J = 8.2 Hz), 129.27, 128.50, 122.61 (d, J = 2.8 Hz), 122.15, 120.68 (d, J = 67.9 Hz), 115.09 (d, J = 219.9 Hz), 114.87 (d, J = 221.4 Hz), 111.68, 109.23, 103.42. GC-MS (m/z): 237。