¹H NMR (400 MHz, CDCl₃) δ 7.22 (t, J = 7.5 Hz, 1H), 7.10 (d, J = 12.6 Hz, 3H), 7.02 (d, J = 7.4 Hz, 1H), 5.85 (d, J = 13.0 Hz, 1H), 3.73 (s, 3H), 2.39 (s, 3H). ¹³C NMR (101 MHz, CDCl₃) δ 148.68, 138.05, 136.21, 128.45, 126.42, 125.86, 122.16, 105.04, 56.41, 21.37. HRMS (EI): calculated for C₁₀H₁₂O: 148.0888; found: 148.0893。