¹H NMR (400 MHz, CDCl₃) δ 7.62 (d, J = 7.2 Hz, 1H), 7.25 – 7.03 (m, 6H), 6.79 (d, J = 8.0 Hz, 2H), 6.57 (s, 1H), 5.42 (s, 1H), 5.21 (s, 1H), 3.73 (s, 3H). ¹³C NMR (101 MHz, CDCl₃) δ 160.32, 144.52, 136.39, 129.46, 129.25, 128.66, 128.22, 121.87, 120.84, 120.08, 113.87, 111.93, 106.24, 102.88, 55.19. GC-MS (m/z): 249。