(2S,4S,5S)-4-[(2R,3S,6S,8R,9R,10S,11Z,13S,15S,16S,17E)-3,9,13,15-tetrakis(tert-butyldimethylsilyloxy)-6,8,10,16-tetramethyl-19-(trityloxy)nonadeca-11,17-dien-2-yl]-2-(4-methoxyphenyl)-5-methyl-1,3-dioxane

((4S,5S,E)-5,7-bis(tert-butyldimethylsilyloxy)-4-methylhept-2-enyloxy)triphenylmethane