NMR:
1H NMR (CDCl3, 400 MHz) δ ppm: 8.66 (s, 1H), 7.80 (d, J = 8.5 Hz, 2H), 7.53–7.48 (m, 4H), 7.36–7.30 (m, 6H), 7.22–7.19 (m, 2H), 7.14 (d, J = 8.7 Hz, 2H), 6.64 (d, J = 8.6 Hz, 2H), 4.88 (br s, 1H), 4.60 (t, J = 7.7 Hz, 1H), 4.52 (d, J = 19.7 Hz, 2H), 4.42 (br s, 1H), 4.34–4.18 (m, 3H), 3.94–3.72 (m, 3H), 3.68–3.51 (m, 14H), 3.21 (br s, 1H), 2.70–2.64 (m, 1H), 2.49 (s, 3H), 2.44–2.36 (m, 1H), 2.22 (s, 3H), 2.05–2.01 (m, 1H), 1.34–1.25 (m, 1H), 1.18 (d, J = 6.3 Hz, 3H), 0.94 (s, 9H).
13C NMR (CDCl3, 101 MHz) δ ppm: 171.1, 170.9, 170.2, 169.5, 167.4, 150.3, 145.8, 143.2, 138.2, 137.7, 136.3, 133.4, 130.9, 129.5, 129.3, 128.1, 127.8, 126.9, 126.5, 125.8, 122.7, 122.6, 114.6, 77.4, 77.0, 76.7, 71.0, 70.4, 70.3, 70.1, 70.0, 69.6, 58.5, 56.9, 56.8, 50.2, 47.6, 43.2, 41.0, 40.0, 36.2, 35.4, 26.4, 23.1, 21.3, 16.1.
