¹H NMR (400 MHz, CDCl₃) δ 8.15 (d, J = 13.4 Hz, 1H), 7.56 (d, J = 5.0 Hz, 1H), 7.47 (t, J = 8.9 Hz, 2H), 7.15 (dd, J = 5.1, 3.7 Hz, 1H). ¹³C{¹H} NMR (101 MHz, CDCl₃) δ 135.31, 134.61, 133.72, 132.06, 131.59, 128.85. GC-MS (m/z): 155.