(4E,7S)-methyl 7-{4-[(1,1-dimethylethyl)diphenylsilyloxymethyl]-2,6-dimethoxyphenyl}-2-(dimethoxyphosphoryl)undec-4-enoate

(7S)-methyl 2-(dimethoxyphosphoryl)-7-(4-hydroxymethyl-2,6-dimethoxyphenyl)undecanoate