(E)-(5S,6R)-5,6-Dihydroxy-6-((S)-2-oxo-[1,3]dioxolan-4-yl)-hex-2-enoic acid ethyl ester

(1S,2R,3S,5S)-2,3-Bis-benzyloxy-6,8-dioxa-bicyclo[3.2.1]octane