1H NMR (400 MHz, CDCl3) δ 7.46 (s, 5H), 6.90 (s, 2H), 6.36 (d, J = 0.8 Hz, 2H), 5.26 (s, 1H), 5.17 (s, 1H). 13C NMR(101 MHz, CDCl3) δ 146.34, 136.96, 129.03, 128.29, 127.81, 121.00, 109.34, 103.11. GC-MS (m/z): 169。