¹H NMR (400 MHz, CDCl₃) δ 7.72 – 7.66 (m, 1H), 7.51 – 7.49 (m, 1H), 7.46 – 7.34 (m, 5H), 6.36 (t, J = 1.9 Hz, 1H), 5.60 (s, 1H), 5.20 (s, 1H). ¹³C NMR (101 MHz, CDCl₃) δ 145.77, 140.84, 135.83, 129.62, 129.21, 128.43, 127.99, 106.46, 104.94. GC-MS (m/z): 170。