¹H NMR (400 MHz, CDCl₃) δ 7.91 (s, 1H), 7.46 (s, 1H), 7.40 (d, J = 6.0 Hz, 4H), 7.33 (d, J = 6.8 Hz, 5H), 7.20 – 7.14 (m, 2H). ¹³C NMR (101 MHz, CDCl₃) δ 151.11, 142.80, 138.75, 136.88, 136.41, 129.40, 129.17, 128.73, 128.61, 128.53, 127.47, 121.41. HRMS (EI): calcd for C₁₆H₁₃N₃: 247.1109, found: 247.1112。