¹H NMR (400 MHz, CDCl₃) δ 7.51-7.45 (m, 2H), 7.44-7.39 (m, 1H), 7.38-7.34 (m, 4H), 7.34-7.29 (m, 3H), 6.21 (t, J = 7.5 Hz, 1H), 2.31-2.20 (m, 2H), 1.17 (t, J = 7.5 Hz, 3H); ¹³C{H} NMR (101 MHz, CDCl₃) δ 142.8, 141.0, 140.2, 131.6, 129.9, 128.1, 128.0, 127.2, 126.8, 126.7, 23.2, 14.5。