¹H NMR (400 MHz, CDCl₃) δ 7.43 – 7.25 (m, 5H), 5.60 (s, 1H), 5.19 (s, 1H), 3.58 – 3.42 (m, 2H), 2.79 – 2.64 (m, 2H), 1.92 – 1.69 (m, 6H). ¹³C NMR (101 MHz, CDCl₃) δ 175.85, 149.11, 136.34, 128.48, 128.42, 125.84, 111.22, 51.86, 37.61, 30.02, 28.69, 23.50. GC-MS (m/z): 215。