¹H NMR (400 MHz, CDCl₃) δ 7.76 (d, J = 1.5 Hz, 1H), 7.61 – 7.45 (m, 3H), 7.44 – 7.34 (m, 2H), 7.29 (s, 2H), 7.14 – 7.00 (m, 3H), 3.85 (s, 3H), 2.42 (s, 6H). ¹³C{H} NMR (101 MHz, CDCl₃) δ 156.50, 141.38, 141.19, 138.87, 138.15, 130.91, 130.72, 128.80, 128.66, 128.45, 128.34, 128.20, 125.79, 125.20, 120.82, 111.24, 55.57, 21.40. m/z (GC-MS): 288。