¹H NMR (400 MHz, CDCl3) δ 7.39 (d, J = 7.4 Hz, 4H), 7.31 (dd, J = 16.2, 8.0 Hz, 4H), 7.21 (dd, J = 14.3, 6.3 Hz, 2H), 6.69 (d, J = 16.0 Hz, 1H), 6.34 (dd, J = 16.0, 5.7 Hz, 1H), 6.13 (s, 1H), 4.52 - 4.38 (m, 2H), 4.33 - 4.27 (m, 1H), 2.54 (t, J= 13.4 Hz, 2H). ¹³C NMR (100 MHz, CDCl3) δ 140.2, 136.9, 133.9, 130.9, 129.7, 128.7, 128.5, 127.8, 127.5, 126.6, 124.9, 122.3, 74.2, 66.2, 33.1. HRMS (EI): calcd for C₁₉H₁₈O: 262.1358, found: 262.1361.