1H NMR (400 MHz, CDCl3) δ 8.66 (s, 1H), 7.95 (dd, J = 38.3, 13.1 Hz, 2H), 7.78 (t, J = 7.6 Hz, 1H), 7.58 – 7.29 (m, 2H). 13C{1H} NMR (101 MHz, CDCl3) δ 150.59, 149.31, 140.63, 137.13, 137.10, 126.27, 125.67. GC-MS (m/z): 150.
