¹H NMR (400 MHz, CDCl₃) δ 7.40 – 7.31 (m, 2H), 7.01 (t, J = 8.0 Hz, 2H), 5.32 (d, J = 44.2 Hz, 2H), 2.72 (s, 2H), 1.82 (d, J = 13.6 Hz, 4H), 1.64 (d, J = 13.5 Hz, 2H), 1.60 – 1.47 (m, 2H), 1.17 (m, 2H). ¹³C{¹H} NMR (101 MHz, CDCl₃) δ 162.34 (d, J = 246.8 Hz), 142.48, 137.82 (d, J = 3.5 Hz), 128.01 (d, J = 8.0 Hz), 122.80, 118.38, 115.20 (d, J = 21.4 Hz), 45.41, 39.74, 35.96, 25.05, 22.90. GC-MS (m/z) = 243.