“…1H, m, H-5), 0.89 (3H, s, H-18), 0.84 (3H, s, H-19), 0.78 (3H, s, H-20), 0.75 (3H, s, H-17) 13. C-NMR (DMSO-d6, 100 MHz): δC 148.5 (CH, C-15), 135.3 (C-8), 120.5 (CH, C-7), 111.3 (CH2, C-16), 73.CH, C-12), 69.4 (CH, C-1), 45.2 (CH2, C-14), 43.CH, C-5), 42.0 (C-13), 41.3 (CH, C-9), 39.0 (C-10), 34.1 (CH2, C-3), 33.8 (CH3, C-19), 32.5 (C-4), 28.CH2, C-11), 25.9 (CH2, C-2), 23.4 (CH2, C-6), 23.0 (CH3, C-18), 15.4 (CH3, C-17), 15.2 (CH3, C-20).…”