(2R,3S,5Z)-11-(benzyloxy)-3-(tert-butyldimethylsilyloxy)undec-5-en-9-yne-1,2,8-triol

(6Z,9S)-1-(benzyloxy)-9-(tert-butyldimethylsilyloxy)-9-[(4R)-2,2-dimethyl-1,3-dioxolan-4-yl]non-6-en-2-yn-4-ol