¹H NMR (400 MHz, CDCl₃) δ 8.14-8.00 (m, 2H), 7.84-7.61 (m, 2H), 3.03 (q, J = 7.2 Hz, 2H), 1.25 (t, J = 7.2 Hz, 3H).¹³C{H} NMR (101 MHz, CDCl₃) δ 199.7, 139.6, 134.2 (q, J = 275.5 Hz), 128.3, 125.6 (d, J = 3.8 Hz), 123.6 (d, J = 270.6 Hz), 32.1, 8.0。