tert-Butyl-[(E)-(S)-7-{(4S,5S)-2,2-dimethyl-5-[(E)-2-((S)-4-methyl-3,6-dihydro-2H-pyran-2-yl)-vinyl]-[1,3]dioxolan-4-yl}-4-(4-methoxy-benzyloxy)-2-methylene-hept-5-enyloxy]-diphenyl-silane