(3S,5S,1R,2R,6R)-7-aza-2-methoxy-1,5-dimethyl-4,9-dioxa-3-phenylthio-7-(1,1,2,2-tetramethyl-1-silapropyl)bicyclo[4.3.0]nonan-8-one

3-(tert-butyl-dimethyl-silanyl)-6-[1,9-dimethoxy-5-(4-methoxy-benzyloxymethyl)-7,10,12-trimethyl-3-oxo-4,15-dioxa-bicyclo[9.3.1]pentadec-7-en-13-yloxy]-7-methoxy-4,7a-dimethyl-tetrahydro-pyrano[3,4-d]oxazol-2-one

2-(6-{(3E)(6S,1R,2R)-2-methoxy-7-[(4-methoxypheny)methoxy]-1,4-dimethyl-6-(methylsulfonyloxy)hep-3-enyl}(2S,4S,5S,6S)-2-methoxy-5-methyl-4-(1,1,2,2-tetramethyl-1-silapropoxy)perhydro-2H-pyran-2-yl)acetic acid