¹H NMR (400 MHz, CDCl₃) δ 7.74 (dd, J = 7.8, 1.3 Hz, 1H), 7.62-7.66 (m, 1H), 7.41-7.46 (m, 1H), 7.29-.21 (m, 1H), 2.98 (q, J = 7.2 Hz, 2H), 1.23 (t, J = 7.2 Hz, 3H). ¹³C{H} NMR (101 MHz, CDCl₃) δ 199.5, 162.9 (d, J = 247.6 Hz), 139.0 (d, J = 6.2 Hz), 130.2 (d, J = 7.6 Hz), 123.7 (d, J = 3.1 Hz), 119.9 (d, J = 21.5 Hz), 114.7 (d, J = 22.1 Hz), 32.0, 8.1。