2-(3-{6-[4-(tert-butoxy-diphenyl-silanyloxy)-but-2-ynyl]-3,6-dihydro-2H-pyran-2-yl}-2-methyl-propyl)-9-(tert-butyl-dimethyl-silanyloxy)-8-(4-methoxy-benzyloxy)-11-(4-methyl-3,6-dihydro-2H-pyran-2-yl)-undeca-1,5,10-trien-4-ol

2-(3-{6-[4-(tert-butoxy-diphenyl-silanyloxy)-but-2-ynyl]-3,6-dihydro-2H-pyran-2-yl}-2-methyl-propyl)-9-(tert-butyl-dimethyl-silanyloxy)-8-(4-methoxy-benzyloxy)-11-(4-methyl-3,6-dihydro-2H-pyran-2-yl)-undeca-1,5,10-trien-4-one

(E)-(1R,7S,11S,15S,17R)-11-(tert-Butyl-dimethyl-silanyloxy)-7-[(E)-(S)-1-(tert-butyl-dimethyl-silanyloxy)-3-((S)-4-methyl-3,6-dihydro-2H-pyran-2-yl)-allyl]-15-methyl-13-methylene-6,21-dioxa-bicyclo[15.3.1]henicosa-9,19-dien-3-yn-5-one

2-(3-{6-[4-(tert-butoxy-diphenyl-silanyloxy)-but-2-ynyl]-3,6-dihydro-2H-pyran-2-yl}-2-methyl-propyl)-9-(tert-butyl-dimethyl-silanyloxy)-8-(4-methoxy-benzyloxy)-11-(4-methyl-3,6-dihydro-2H-pyran-2-yl)-undeca-1,5,10-trien-4-ol