(E)-3-[(1R,2R)-2,3-Bis-benzyloxy-1-(2-[1,3]dithian-2-yl-ethyl)-propoxy]-acrylic acid ethyl ester

(1'R,2R,3R,6R)-6-(1',2'-bis-benzyloxy-ethyl)-2-tetradec-2-enyl-tetrahydro-pyran-3-ol