1-(tert-butyl)-[(2R)-2-[(4-methoxybenzyl)oxy]-2-((4R,5S)-5-[(1S)-1-[(4-methoxybenzyl)oxy]ethyl]-2,2-dimethyl-1,3-dioxolan-4-yl)ethyl]oxydimethylsilane

(Z,4R)-1-allyl-4-[(4-methoxybenzyl)oxy]-4-((4R,5S)-5-[(1S)-1-[(4-methoxybenzyl)oxy]ethyl]-2,2-dimethyl-1,3-dioxolan-4-yl)-2-butenyl acrylate