5.1 Hz, 1H), 4.37–4.24 (m, 2H), 4.09 (dt, J = 5.9 Hz, J = 3.0 Hz, 1H), 3.99 (dd, J = 11.5 Hz, J = 3.7 Hz, 1H), 3.76 (dd, J = 11.5 Hz, J = 2.8 Hz, 1H), 3.70–3.61 (m, 2H), 2.77–2.68 (m, 3H), 2.63 (dd, J = 13.5 Hz, J = 7.0 Hz, 1H), 2.46–2.37 (m, 2H), 1.59 (s, 3H), 1.38 (s, 3H), 1.31–1.22 (m, 2H), 1.22–1.12 (m, 2H), 0.92 (s, 9H), 0.91 (s, 9H), 0.82 (t, J = 7.3 Hz, 3H), 0.10–0.08 (m, 12H). 13C NMR (150 MHz, CDCl3) δ 155.6, 155.5, 153.2, 153.1, 149.8, 149.4, 140.2, 139.7, 120.5, 120.3, 114.4, 91.2, 87.2, 85.8, 84.9, 84.0, 83.4, 82.4, 69.9, 69.3, 62.0, 56.7, 55.1, 53.9, 29.