¹H NMR (400 MHz, CDCl₃) δ 8.21 (s, 1H), 8.14 (d, J = 7.5 Hz, 1H), 7.80 (d, J = 6.9 Hz, 1H), 7.60 (t, 1H), 3.03 (q, J = 7.2 Hz, 2H), 1.24 (t, J = 7.2 Hz, 3H). ¹³C{H} NMR (101 MHz, CDCl₃) δ 199.3, 137.4, 131.1, 129.2 (t), 124.8 (q, J = 3.9 Hz), 31.9, 8.0。