(2S,6R)-6-Allyl-2-[4-(tetrahydro-pyran-2-yloxy)-but-2-ynyl]-3,6-dihydro-2H-pyran

Methanesulfonic acid (2R,3S,6R)-6-allyl-2-(tert-butyl-dimethyl-silanyloxymethyl)-3,6-dihydro-2H-pyran-3-yl ester