¹H NMR (400 MHz, CDCl₃) δ 7.57 (d, J = 1.5 Hz, 1H), 7.47 (s, 1H), 7.42 – 7.33 (m, 2H), 7.32 – 7.27 (m, 2H), 7.21 – 7.16 (m, 2H), 7.15 – 7.09 (m, 2H), 6.90 (d, J = 2.5 Hz, 1H), 6.17 – 6.12 (m, 1H). ¹³C NMR (101 MHz, CDCl₃) δ 140.49, 138.29, 135.91, 134.38, 134.00, 131.26, 129.46, 129.16, 129.00, 128.72, 128.63, 126.03, 106.99. GC-MS (m/z): 314。