¹H NMR (400 MHz, CDCl₃) δ 7.30 (d, J = 7.4 Hz, 4H), 7.24-7.15 (m, 6H), 1.85 (s, 6H); ¹³C{H} NMR (101 MHz, CDCl₃) δ 143.3, 137.1, 131.0, 129.8, 127.8, 126.0, 22.5。5.45-5.29 (m, 1H), 2.01-1.87 (m, 4H), 1.64 (s, 3H), 1.62-1.51 (m, 4H); ¹³C{H} NMR (101 MHz, CDCl₃) δ 134.0, 121.1, 30.0, 25.3, 23.9, 23.0, 22.4。