phenyl 6-O-{3-[(2S,3R,4E)-1-O-tert-butyldimethylsilyl-2-octadecanamido-4-octadecene-3-yloxy-1,3-diol]carbonylpropanoyl}-2,3-di-O-p-methoxybenzyl-1-thio-β-D-glucopyranoside