¹H NMR (400 MHz, CDCl₃) δ 8.12 (s, 1H), 8.02 – 7.88 (m, 4H), 7.82 (dd, J = 8.5, 1.7 Hz, 1H), 7.71 (d, J = 7.5 Hz, 1H), 7.65 – 7.49 (m, 6H), 7.31 (d, J = 7.9 Hz, 2H), 2.44 (s, 3H). ¹³C{H} NMR (101 MHz, CDCl₃) δ 141.81, 141.61, 138.56, 138.29, 137.22, 133.67, 132.66, 129.53, 129.21, 128.43, 128.19, 127.64, 127.10, 126.29, 126.19, 126.09, 126.02, 125.95, 125.89, 125.63, 21.12. m/z (GC-MS): 294。