... (3H, s' H3- 9 ), 1,5 2 (2H, m, 2H-11 ), 1,6 2 (1H, m, H-12b ), 1,6 6 (1H, m, H-25 ), 1,7 0 (1H, m, H-1 a ), 1,8 8 (1H, m, H-16b ), 1,9 3 (IH , dd, J = u , Hz, 3,0 Hz, H-8 ), 2,0 2 (IH , m’ H-7b ), 2,0 4 ( H, m, ... H-22a ), 1,0 3 (1H, m, H-17 ), 1,1 6(1 H, m, H-14 ), u (3H, m, H-15a, 2H-23)' 1,1 8 ( H, m, H-12a ), 1,2 4 ( H, m, H-7a ), 1,2 5 (2H, m, 2H-28 ), 1,3 0 (1H, m, H-16a ), 13 (1H, m, H-22b ), 13 (1H, m' H-20 ), 1,3 8 ... C-16 ), 2 9,2 (d, C-25 ), 2 9,8 (d, C-8 ), 33.9 (t, C-22 ), 3 4,3 (t, C-2 ), 3 6,1 (d, C-20 ), 3 7,1 (t, C-1 ), 3 8,0 (s, C-1 0 ), 3 8,6 (t, C-7 ), 3 9,6 (t, C-1 ), 4 2,5 (s, C-13 ), 45.9 (d, C-24 ), 5 3,7 (d, C-9),...