¹H NMR (400 MHz, CDCl₃) δ 7.71 – 7.57 (m, 1H), 7.36 – 7.33 (m, 3H), 7.25 – 7.11 (m, 5H), 6.46 (s, 1H), 6.11 (d, J = 2.2 Hz, 1H), 5.48 (d, J = 2.4 Hz, 1H), 2.29 (d, J = 2.8 Hz, 3H). ¹³C NMR (101 MHz, CDCl₃) δ 142.89, 138.02, 137.06, 137.01, 128.87, 128.66, 128.29, 125.65, 121.00, 119.92, 119.49, 113.59, 110.47, 101.28, 13.03. GC-MS (m/z): 233。