(2R,3S,6R)-3-[(tert-butyldimethylsilyl)oxy]-6-{[(tert-butyldimethylsilyl)oxy]methyl}-N,2-dimethyl-N-(methoxy)octanamide

(2S,3R,6R,8S,9S)-3,9-dimethyl-8-[(R)-2-hydroxy-1-propyl]-2-[(R)-3-hydroxymethyl-1-pentyl]-1,7-dioxaspiro[5.5]undecan-4-one