¹H NMR (400 MHz, CDCl₃) δ 8.13-7.77 (m, 2H), 7.12 (t, J = 8.6 Hz, 2H), 2.92 (t, J = 7.3 Hz, 2H), 1.76 (q, J = 7.3 Hz, 2H), 1.00 (t, J = 7.4 Hz, 3H). ¹³C NMR (101 MHz, CDCl₃) δ 198.75 , 165.62 (d, J = 254.2 Hz), 133.53, 130.63 (d, J = 9.3 Hz), 115.60 (d, J = 21.7 Hz), 40.43, 17.76, 13.86。