1H NMR (400 MHz, CDCl3) δ 7.48 – 7.20 (m, 9H), 5.17 (t, J = 5.4 Hz, 1H), 4.95 (q, J = 14.2 Hz, 4H), 3.12 (d, J = 5.3 Hz, 2H). 13C NMR (101 MHz, CDCl3) δ 139.03, 136.79, 129.61, 128.22, 127.41, 127.28, 126.39, 108.49, 71.48, 41.25. GC-MS (m/z): 240。