¹H NMR (400 MHz, CDCl₃) δ 8.26 (d, J = 8.5 Hz, 1H), 8.04 (s, 1H), 7.80 (d, J = 8.1 Hz, 1H), 7.77 – 7.70 (m, 1H), 7.58 – 7.51 (m, 2H), 7.49 – 7.44 (m, 3H), 7.42 – 7.36 (m, 2H), 6.34 – 6.28 (m, 1H), 5.95 (d, J = 3.4 Hz, 1H). ¹³C{¹H} NMR (101 MHz, CDCl₃) δ 152.1, 147.5, 147.1, 143.7, 139.9, 137.8, 133.4, 129.9, 129.3, 129.3, 128.5, 127.9, 127.3, 126.8, 126.6, 113.8, 111.4. HRMS (EI) m/z: calcd for C₁₉H₁₃NO, 271.0997; found, 271.0994.