(2S,3R)-2-(tert-Butyl-dimethyl-silanyloxy)-3-methyl-6-trimethylsilanyl-hex-5-ynal

(5S)-4,5-anhydro-1,2-dideoxy-3-O-{(2E,4E,8R,9R,11S,12S)-3-methyl-7,10-bis(methylene)-8,9,11,12-tetrakis[(triethylsilyl)oxy]pentadeca-2,4,14-trienoyl}-5-[(1S)-1-methylbutyl]-2-prop-2-yn-1-yl-D-ribitol