1H NMR (400 MHz, CDCl₃) δ 7.89 (d, J = 8.3 Hz, 2H), 7.27 (d, J = 8.3 Hz, 2H), 2.97 (q, J = 7.3 Hz, 2H), 2.70 (q, J = 7.6 Hz, 2H), 1.37-1.13 (m, 6H). ¹³C{H} NMR (101 MHz, CDCl₃) δ 200.5, 149.7, 134.6, 128.2, 128.0, 31.6, 28.9, 15.2, 8.3。