NMR:
1H NMR (400 MHz, DMSO-d6) δ 12.2 (s, 1H, 10), 10.2 (d, J = 21.8 Hz, 1H, 7), 8.5 (t, J = 1.1 Hz, 1H, 17), 8.2 (d, J = 0.9 Hz, 1H, 20), 8.1 (s, 1H, 25), 8.0 (dd, J = 1.7, 8.8 Hz, 1H, 16), 7.8 (d, J = 8.9 Hz, 1H, 3), 7.6 – 7.3 (m, 2H, 2, 6), 4.1 (s, 3H, 28), 4.0 (d, J = 14.2 Hz, 1H, 11''), 3.5 (d, J = 14.1 Hz, 1H, 11'), 2.9 (ddd, J = 3.3, 7.5, 9.0 Hz, 1H, 21), 2.5 (s, 1H, 24''), 2.3 (q, J = 8.7 Hz, 1H, 24'), 1.9 (dddd, J = 5.6, 7.2, 9.4, 12.5 Hz, 1H, 22''), 1.7 – 1.6 (m, 2H, 22', 23''), 1.5 – 1.3 (m, 1H, 23'), 1.1 (d, J = 6.0 Hz, 3H, 29);
13C NMR (101 MHz, DMSO-d6) δ 165.4 (8, 13), 140.6 (1, 5), 133.9 (4, 19), 127.6 (25), 125.6 (15, 17), 122.9 (16), 121.3 (18), 117.9 (2), 115.1 (20), 109.5 (3), 103.2 (6), 59.0 (11), 54.0 (21), 51.0 (24), 35.6 (28), 32.6 (22), 21.4 (23), 18.9 (29);
