1H NMR (400 MHz, CDCl3) δ 7.81 (s, 1H), 7.32 (ddd, J = 11.0, 8.3, 3.9 Hz, 2H), 7.27 – 7.17 (m, 2H), 3.03 (dd, J = 12.7, 5.0 Hz, 2H), 2.94 (dd, J = 12.7, 5.4 Hz, 2H). 13C{1H} NMR (101 MHz, CDCl3) δ 147.87, 136.36, 131.54, 131.21, 130.12, 130.09, 127.87, 127.28, 27.87, 22.32. GC-MS (m/z): 175.