¹H NMR (400 MHz, CDCl₃) δ 7.33 – 7.25 (m, 4H), 7.20 – 7.19 (m, 1H), 7.09 (d, J = 13.0 Hz, 1H), 5.86 (d, J = 13.0 Hz, 1H), 3.73 (s, 3H). ¹³C NMR (101 MHz, CDCl₃) δ 148.81, 136.32, 128.57, 125.62, 125.07, 104.99, 56.45. GC-MS (m/z): 134。