¹H NMR (400 MHz, CDCl₃) δ 7.67 (d, J = 1.2 Hz, 1H), 7.58 (dd, J = 2.4, 0.5 Hz, 1H), 7.38 (dd, J = 3.0, 1.3 Hz, 1H), 7.33 (dd, J = 5.0, 3.0 Hz, 1H), 7.15 (dd, J = 5.0, 1.3 Hz, 1H), 6.38 – 6.34 (m, 1H), 5.50 (s, 1H), 5.24 (s, 1H). ¹³C NMR(101 MHz, CDCl₃) δ 140.95, 140.72, 136.93, 129.34, 126.88, 125.97, 124.79, 106.40, 104.41. GC-MS (m/z): 176。