¹H NMR (400 MHz, CDCl₃) δ 7.33 (t, J = 6.8 Hz, 2H), 7.20 (d, J = 7.8 Hz, 2H), 7.16 (t, J = 5.4 Hz, 4H), 6.47 (s, 1H), 3.80 (s, 3H), 2.41 (s, 6H). ¹³C NMR (101 MHz, CDCl₃) δ 145.53, 137.61, 136.11, 135.98, 134.81, 129.67, 128.90, 128.64, 128.05, 120.33, 60.42, 21.20, 21.04. GC-MS (m/z): 238。