¹H NMR (400 MHz, CDCl₃) δ 8.04 (s, 1H), 7.85 (d, J = 8.0 Hz, 1H), 7.43 – 7.35 (m, 3H), 7.31 – 7.26   (m, 3H), 7.20 (t, J= 7.6 Hz, 1H), 7.07 (d, J = 8.0 Hz, 1H), 5.69 (s, 1H), 5.46 (s, 1H). ¹³C NMR (101 MHz, CDCl₃) δ 143.73, 143.00, 142.14, 135.23, 133.74, 129.74, 128.83, 126.69, 123.44, 122.68, 120.35, 111.71, 109.48. GC-MS (m/z): 220。