¹H NMR (400 MHz, CDCl₃) δ 8.12 (d, J = 7.5 Hz, 2H), 7.57 (t, J = 7.2 Hz, 1H), 7.54 – 7.45 (m, 5H), 7.43 (s, 2H), 7.17 (s, 1H), 4.46 (t, J = 12.1 Hz, 1H), 2.24 – 2.13 (m, 2H), 1.91 (d, J = 11.8 Hz, 2H), 1.79 (d, J = 12.6 Hz, 2H), 1.60 (d, J = 11.6 Hz, 1H), 1.32 – 1.16 (m, 3H). ¹³C{¹H} NMR (101 MHz, CDCl₃) δ 185.5, 144.2, 138.5, 138.4, 132.5, 130.7, 130.3, 130.1, 129.4, 129.0, 128.5, 128.0, 58.9, 32.4, 26.2, 24.9. HRMS (EI) m/z: calcd for C₂₂H₂₂N₂O, 330.1732; found, 330.1736.