¹H NMR (400 MHz, CDCl₃) δ 8.81 (s, 1H), 8.60 (s, 1H), 7.83 (s, 1H), 7.56 (d, J = 7.3 Hz, 2H), 7.47 (d, J = 8.4 Hz, 2H), 7.36-7.27 (m, 4H), 2.32 (s, 3H). ¹³C{H} NMR (101 MHz, CDCl₃) δ 148.6, 146.1, 137.7, 136.0, 135.6, 134.9, 134.5, 130.7, 129.9, 129.3, 128.4, 128.3, 126.2, 20.4. HRMS (EI) m/z: [M]⁺ Calcd for C₁₈H₁₄ClN: 279.0815; Found: 279.0812。