1H NMR (400 MHz, CDCl3) δ 6.38 (s, 1H), 2.37 (s, 3H), 1.99 – 1.93 (m, 1H), 1.87 – 1.71 (m, 5H), 1.33 – 1.28 (m, 5H), 1.21 – 1.04 (m, 1H). 13C{1H} NMR (101 MHz, CDCl3) δ 131.46, 111.60, 50.92, 33.76, 25.93, 16.32. GC-MS (m/z) = 282.