¹H NMR (400 MHz, CDCl₃) δ 7.23 – 7.14 (m, 1H), 7.12 – 6.99 (m, 3H), 5.05 (t, J = 4.7 Hz, 1H), 4.00 – 3.89 (m, 2H), 3.87 – 3.76 (m, 2H), 2.93 (d, J = 4.4 Hz, 2H), 2.33 (s, 3H). ¹³C NMR (101 MHz, CDCl₃) δ 137.84, 136.00, 130.30, 128.20, 127.32, 126.54, 104.72, 64.89, 40.65, 21.34. HRMS (EI): calcd for C₁₁H₁₄O₂: 178.0994, found: 178.0996。