[(4E,6E,14Z,16E,19E)-(1R,9S,11S,12S,13R,21S,23S,24S)-11-(tert-Butyl-dimethyl-silanyloxy)-24-(tert-butyl-dimethyl-silanyloxymethyl)-12,15,24-trimethyl-3-oxo-2,22,26-trioxa-tricyclo[19.3.1.19,13]hexacosa-4,6,14,16,19-pentaen-23-yl]-acetaldehyde

2,2-dimethyl-propionic acid 2-(6-{7-[4-(tert-butyl-dimethyl-silanyloxy)-6-(3-iodo-allyl)-3-methyl-tetrahydro-pyran-2-yl]-6-methyl-hepta-1,4,6-trienyl}-4-hydroxy-3-hydroxymethyl-3-methyl-tetrahydro-pyran-2-yl)-ethyl ester

(4E,6E,14Z,16E,19E)-(1R,9S,11S,12S,13R,21S,23S,24S)-11-(tert-Butyl-dimethyl-silanyloxy)-24-(tert-butyl-dimethyl-silanyloxymethyl)-23-(2-hydroxy-ethyl)-12,15,24-trimethyl-2,22,26-trioxa-tricyclo[19.3.1.19,13]hexacosa-4,6,14,16,19-pentaen-3-one

2,2-dimethyl-propionic acid 2-[6-{7-[4-(tert-butyl-dimethyl-silanyloxy)-6-(3-iodo-allyl)-3-methyl-tetrahydro-pyran-2-yl]-6-methyl-hepta-1,4,6-trienyl}-3-(tert-butyl-dimethyl-silanyloxymethyl)-4-hydroxy-3-methyl-tetrahydro-pyran-2-yl]-ethyl ester

2,2-dimethyl-propionic acid 2-[11-(tert-butyl-dimethyl-silanyloxy)-24-(tert-butyl-dimethyl-silanyloxymethyl)-12,15,24-trimethyl-3-oxo-2,22,26-trioxa-tricyclo[19.3.1.19,13]hexacosa-4,6,14,16,19-pentaen-23-yl]-ethyl ester