¹H NMR (400 MHz, CDCl₃) δ 8.28 (d, J = 7.3 Hz, 2H), 7.64 – 7.56 (m, 2H), 7.55 – 7.43 (m, 4H), 7.40 (d, J = 7.4 Hz, 1H), 7.35 – 7.19 (m, 4H), 7.17 – 7.08 (m, 2H). ¹³C{¹H} NMR (101 MHz, CDCl₃) δ 182.9, 149.5, 148.2, 138.8, 136.7, 135.2, 134.4, 133.1, 131.1, 130.8, 129.5, 128.9, 128.8, 128.7, 128.5, 128.2, 127.7. HRMS (EI) m/z: calcd for C₂₁H₁₅N₃O, 325.1215; found, 325.1211.