¹H NMR (400 MHz, CDCl₃) δ 8.34 (d, J = 3.6 Hz, 1H), 7.95 (d, J = 7.8 Hz, 1H), 7.40 – 7.27 (m, 5H), 7.18 (d, J = 3.0 Hz, 1H), 7.11 (dd, J = 7.2, 5.1 Hz, 1H), 6.54 (d, J = 3.0 Hz, 1H), 5.77 (d, J = 11.0 Hz, 2H). ¹³C NMR (101 MHz, CDCl₃) δ 148.30, 143.50, 142.84, 137.30, 128.95, 128.92, 128.84, 128.44, 126.74, 121.31, 116.50, 110.08, 100.74. HRMS (EI): calcd for C₁₅H₁₂N₂: 220.1000, found: 220.1003。