{(2R,6S)-6-[2-(tert-butyldimethylsilanyloxy)ethyl]tetrahydropyran-2-yl}acetic acid ethyl ester

(S)-1-{(2R,6S)-6-[2-(tert-butyldimethylsilanyloxy)ethyl]tetrahydropyran-2-yl}pent-4-en-2-ol