¹H NMR (400 MHz, CDCl₃) δ 7.91 (d, J = 7.8 Hz, 2H), 7.48 (t, J = 7.4 Hz, 1H), 7.39 (t, J = 7.6 Hz, 2H), 2.93 (q, J = 7.2 Hz, 2H), 1.17 (t, J = 7.3 Hz, 3H). ¹³C{H} NMR (101 MHz, CDCl₃) δ 200.5, 136.7, 132.6, 128.3, 127.7, 31.5, 8.0。