¹H NMR (400 MHz, CDCl₃) δ 8.24 (d, J = 7.7 Hz, 2H), 7.62 – 7.56 (m, 3H), 7.54 – 7.40 (m, 5H), 7.23 (s, 1H), 3.82 – 3.73 (m, 1H), 1.07 – 0.97 (m, 2H), 0.56 – 0.47 (m, 2H). ¹³C{¹H} NMR (101 MHz, CDCl₃) δ 183.4, 146.6, 139.5, 137.1, 132.9, 130.7, 129.5, 128.6, 128.6, 128.6, 128.2, 127.9, 29.4, 10.4. HRMS (EI) m/z: calcd for C₁₉H₁₆N₂O, 288.1263; found, 288.1261.