¹H NMR (400 MHz, CDCl₃) δ 7.59 (dd, J = 16.1, 7.8 Hz, 4H), 7.45 (t, J = 7.6 Hz, 2H), 7.36 (dd, J = 14.1, 7.5 Hz, 3H), 5.13 (t, J = 4.8 Hz, 1H), 4.04 – 3.94 (m, 2H), 3.93 – 3.84 (m, 2H), 3.04 (d, J = 4.8 Hz, 2H). ¹³C NMR (101 MHz, CDCl₃) δ 140.98, 139.49, 135.19, 130.02, 128.66, 127.05, 126.99, 104.60, 64.97, 40.38. HRMS (EI): calcd for C₁₆H₁₆O₂: 240.1150, found: 240.1147。