¹H NMR (400 MHz, CDCl₃) δ 8.35 – 8.20 (m, 2H), 7.67 (d, J = 8.3 Hz, 2H), 7.60 (t, J = 7.4 Hz, 1H), 7.52 – 7.47 (m, 3H), 7.37 (d, J = 8.2 Hz, 2H), 7.33 – 7.26 (m, 3H), 7.14 – 7.08 (m, 2H). ¹³C{¹H} NMR (101 MHz, CDCl₃) δ 182.9, 144.1, 140.4, 138.5, 136.8, 133.2, 130.8, 129.4, 128.7, 128.7, 128.2, 128.1, 127.9, 126.2 (q, J = 3.7 Hz). HRMS (EI) m/z: calcd for C₂₃H₁₅F₃N₂O, 392.1136; found, 392.1137.