¹H NMR (400 MHz, CDCl₃) δ 8.19 (d, J = 7.6 Hz, 2H), 7.43 – 7.30 (m, 11H), 6.12 (s, 1H), 5.65 (s, 1H). ¹³C NMR (101 MHz, CDCl₃) δ 142.70, 140.80, 136.34, 129.03, 128.70, 126.20, 125.82, 123.40, 120.14, 119.78, 112.85, 110.84. GC-MS (m/z): 269。