¹H NMR (400 MHz, CDCl₃) δ 8.13-7.83 (m, 2H), 7.19-7.01 (m, 2H), 2.97 (q, J = 7.2 Hz, 2H), 1.21 (t, J = 7.2 Hz, 3H). ¹³C{H} NMR (101 MHz, CDCl₃) δ 199.2, 165.6 (d, J = 254.2 Hz), 133.3 (d, J = 3.1 Hz), 130.6 (d, J = 9.2 Hz), 115.6 (d, J = 21.9 Hz), 31.7, 8.2。