¹H NMR (400 MHz, CDCl₃) δ 7.64 (d, J = 7.2 Hz, 1H), 7.50 – 7.32 (m, 5H), 7.22 – 7.13 (m, 3H), 7.00 (s, 1H), 5.53 (s, 1H), 5.36 (s, 1H), 2.40 (s, 3H). ¹³C NMR (101 MHz, CDCl₃) δ 144.98, 137.32, 136.65, 129.81, 129.01, 128.49, 127.10, 126.18, 121.93, 119.59, 118.95, 112.21, 111.83, 106.95, 9.57. GC-MS (m/z): 233。