1H NMR (400 MHz, CDCl3) δ 7.64 (s, 1H), 7.43 – 7.35 (m, 3H), 7.34 – 7.31 (m, 2H), 7.13 (s, 1H), 7.02 (s, 1H), 5.32 (d, J = 0.8 Hz, 1H), 5.29 (d, J = 0.8 Hz, 1H). 13C NMR (101 MHz, CDCl3) δ 143.21, 137.12, 135.59, 129.67, 129.55, 128.69, 127.20, 119.27, 106.39. GC-MS (m/z): 170。
