¹H NMR (400 MHz, CDCl₃) δ 7.89 (s, 1H), 7.64 (d, J = 7.5 Hz, 2H), 7.56 (t, J = 10.6 Hz, 5H), 7.43 (t, J = 7.5 Hz, 2H), 7.27 (d, J = 7.5 Hz, 2H), 2.52 (s, 6H). ¹³C{H} NMR (101 MHz, CDCl₃) δ 141.82, 141.20, 138.31, 129.02, 128.66, 128.08, 128.02, 126.13, 126.01, 124.34, 21.52. m/z (GC-MS): 258。