4-[4,10-bis-(tert-butyl-dimethyl-silanyloxy)-12-(4-methoxy-benzyloxy)-3,5,7,9,11,13-hexamethyl-heptadeca-1,6,14,16-tetraenyl]-6-[2-(tert-butyl-dimethyl-silanyloxy)-6-(4-methoxy-benzyloxy)-1,3-dimethyl-hex-4-enyl]-2,2-dimethyl-[1,3]dioxane