¹H NMR (400 MHz, CDCl₃) δ 9.12 (d, J = 2.0 Hz, 1H), 8.21 (d, J = 1.7 Hz, 1H), 8.04 (d, J = 8.6 Hz, 1H), 7.74 – 7.67 (m, 2H), 7.63 (s, 1H), 7.58 – 7.49 (m, 3H), 7.47 – 7.40 (m, 1H), 2.56 (s, 3H). ¹³C{¹H} NMR (101 MHz, CDCl₃) δ 148.9, 145.9, 138.0, 136.9, 133.8, 132.6, 131.7, 129.1, 128.8, 128.0, 128.0, 127.4, 126.8, 21.6. HRMS (EI) m/z: calcd for C₁₆H₁₃N, 219.1048; found, 219.1047.