5,13,15-Hexadecatrien-1-ol,3,9-bis[[(1,1-dimethylethyl)dimethylsilyl]oxy]-11-[(4-methoxyphenyl)methoxy]-2,4,6,8,10,12-hexamethyl-,(2S,3R,4S,5Z,8S,9R,10R,11S,12S,13Z)-