¹H NMR (400 MHz, CDCl₃) δ 7.83 (s, 1H), 7.64 (d, J = 7.5 Hz, 2H), 7.60 – 7.53 (m, 1H), 7.50 (d, J = 7.4 Hz, 2H), 7.46 – 7.36 (m, 2H), 7.14 (t, J = 7.6 Hz, 2H), 7.09 (d, J = 8.2 Hz, 2H), 3.91 (s, 6H). ¹³C{H} NMR (101 MHz, CDCl₃) δ 156.45, 138.09, 130.91, 130.72, 130.69, 128.46, 128.12, 127.46, 120.73, 111.13, 55.44. m/z (GC-MS): 290。