Acetic acid (E)-(5S,7S,10R)-2-benzenesulfonyl-7-benzyloxy-11-(tert-butyl-diphenyl-silanyloxy)-1-((E)-(3S,5R)-5-[1,3]dithian-2-yl-3-methyl-hex-1-enyl)-5-methoxy-4,10-dimethyl-undec-3-enyl ester

(5E,7E,9E)-(2R,4S,11S,13S,16R)-13-Benzyloxy-17-(tert-butyl-diphenyl-silanyloxy)-11-methoxy-2,4,10,16-tetramethyl-heptadeca-5,7,9-trienal