... (3H, s, CH3 ), 0.85 (3H, d, J=6.0 Hz, CH3 ), 0.86 (3H, s, CH3 ), 0.95 (3H, s, CH3 ), 0.96 (3H, s, CH3 ), 1.07 (3H, s, CH3 ), 1.25 (3H, s, CH3 ), 2.04 (3H, s, H3CCOO ), 2.18 (1H, d, ... (3H, s, CH3 ), 0.88 (3H, d, J=7.0 Hz, CH3 ), 0.96 (3H, d, J=6.0 Hz, CH3 ), 1.02 (3H, s, CH3 ), 1.06 (3H, s, CH3 ), 1.07 (3H, s, CH3 ), 1.15 (3H, s, CH3 ), 2.22 (1H, d, J=11.5 Hz, H-18 ), ... (3H, d, J=6.5 Hz, CH3 ), 0.98 (3H, s, CH3 ), 1.02 (3H, s, CH3 ), 1.08 (3H, s, CH3 ), 1.14 (3H, s, CH3 ), 2.10 (1H, m, H-2a ), 2.20 (1H, d, J=9.2 Hz, H-18 ), 2.48 (1H, m, H-2b ), 5.26 (1H,...