(E)-(4S,5S,6S,8R)-5-(tert-Butyl-dimethyl-silanyloxy)-4,6,8-trimethyl-non-2-enedioic acid 1-methyl ester

(E)-(4S,5R)-4-Methyl-5-(tetrahydro-pyran-2-yloxy)-hept-2-enoic acid methyl ester