1H NMR (400 MHz, CDCl3) δ 7.97 (d, J = 13.6 Hz, 1H), 7.51 (dd, J = 11.2, 5.8 Hz, 3H), 6.96 (d, J = 8.8 Hz, 2H), 3.87 (s, 3H). 13C{1H} NMR (101 MHz, CDCl3) δ 162.93, 139.00, 135.03, 131.14, 122.54, 114.98, 55.51. GC-MS (m/z): 179.