¹H NMR (400 MHz, CDCl₃) δ 7.39 (t, J = 7.5 Hz, 2H), 7.31 (d, J = 7.4 Hz, 3H), 7.16 (d, J = 5.1 Hz, 1H), 7.03-6.94 (m, 2H), 6.63 (d, J = 15.6 Hz, 1H), 6.37-6.22 (m, 1H), 3.58 (d, J = 5.5 Hz, 2H); ¹³C{H} NMR (101 MHz, CDCl₃) δ 142.6, 139.7, 129.1, 128.6, 128.5, 127.2, 126.2, 124.7, 124.2, 123.4, 39.1。