¹H NMR (400 MHz, CDCl₃) δ 9.26 (d, J = 2.4 Hz, 1H), 8.37 (d, J = 2.4 Hz, 1H), 7.90 (dd, J = 8.1, 1.4 Hz, 1H), 7.75 (t, J= 6.4 Hz, 5H), 7.67 – 7.62 (m, 1H), 7.54 (t, J = 7.6 Hz, 4H), 7.45 (t, J = 7.5 Hz, 2H). ¹³C{¹H} NMR (101 MHz, CDCl₃) δ 149.6, 144.9, 140.7, 139.4, 137.8, 133.5, 133.4, 130.6, 130.2, 129.2, 128.5, 128.1, 128.0, 127.7, 127.4, 127.3, 126.7. HRMS (EI) m/z: calcd for C₂₁H₁₅N, 281.1204; found, 281.1200.