¹H NMR (400 MHz, CDCl₃) δ 7.37 (d, J = 13.6 Hz, 7H), 7.32 – 7.27 (m, 2H), 7.20 – 7.17 (m, 3H), 6.93 (s, 1H), 6.64 (s, 1H). ¹³C NMR (101 MHz, CDCl₃) δ 139.77, 137.58, 137.28, 134.80, 129.56, 128.99, 128.91, 128.43, 128.34, 128.15, 127.48, 120.28, 118.85. HRMS (EI): calcd for C₁₇H₁₂N₂: 246.1157, found: 246.1153。