1H NMR (400 MHz, CDCl3) δ 7.87 (s, 1H), 7.85 - 7.77 (m, 2H), 7.74 (d, J = 8.6 Hz, 1H), 7.58 (d, J = 8.9 Hz, 1H), 7.48 (t, J = 5.4 Hz, 2H), 7.00 (s, 1H), 2.55 (s, 3H). 13C{1H} NMR (101 MHz, CDCl3) δ 138.77, 137.96, 133.10, 132.85, 128.14, 127.88, 127.50, 127.23, 126.59, 126.34, 125.39, 97.26, 16.71. GC-MS (m/z) = 326.