NMR:
1H NMR (400 MHz, Chloroform-d) δ 8.14 (t, J = 1.8 Hz, 1H), 7.92 (ddd, J = 7.8, 1.8, 1.1 Hz, 1H), 7.86 (ddd, J = 7.8, 1.9, 1.1 Hz, 1H), 7.65 (t, J = 7.8 Hz, 1H), 7.61 – 7.53 (m, 2H), 7.34 – 7.27 (m, 3H), 7.10 – 7.02 (m, 2H), 6.97 (s, 2H), 6.90 (dt, J = 7.6, 1.4 Hz, 1H), 4.44 (s, 2H), 3.31 (dd, J = 8.5, 6.8 Hz, 2H), 3.10 (s, 3H), 2.71 (dd, J = 8.7, 6.6 Hz, 2H), 2.62 (s, 6H), 2.33 (s, 3H);
13C NMR (100 MHz, Chloroform-d) δ (ppm) 142.9, 142.2, 141.4, 141.0, 140.7, 140.3, 138.8, 136.3, 133.8, 133.0, 132.3, 131.7, 130.2, 130.1, 129.7, 129.5, 127.7, 127.5, 127.4, 126.2, 125.9, 122.6, 49.9, 46.8, 44.6, 33.6, 23.0, 21.2
