1H NMR (400 MHz, CDCl3) δ 7.62 (s, 1H), 7.55 (s, 1H), 7.42 - 7.31 (m, 2H), 7.21 – 7.14 (m, 2H). 13C{1H} NMR (101 MHz, CDCl3) δ 142.87, 138.41, 131.19, 130.17, 129.04, 128.87, 128.49, 127.22, 113.81. GC-MS (m/z): 275.