1H NMR (400 MHz, CDCl3) δ 7.61 (d, J = 3.9 Hz, 11H), 7.45 (t, J = 7.5 Hz, 5H), 7.37 (t, J = 7.3 Hz, 2H), 3.20 (s, 3H). 13C{1H} NMR (101 MHz, CDCl3) δ 170.9, 142.5, 140.1, 135.7, 130.3, 128.9, 127.9, 127.7, 127.2, 127.1, 24.3. HRMS (EI) m/z: calcd for C29H21NO2, 415.1572; found, 415.1568.