(2R,4R,5R,6R)-6-[(1R)-1,2-dihydroxyethyl]-2,4,5-trihydroxyoxane-2-carboxylate
(2R,4R,5R,6R)-6-[(1R)-1,2-dihydroxyethyl]-2,4,5-trihydroxy-tetrahydropyran-2-carboxylate
(2R,4R,5R,6R)-6-[(1R)-1,2-dihydroxyethyl]-2,4,5-trihydroxy-2-tetrahydropyrancarboxylate
(2R,4R,5R,6R)-6-[(1R)-1,2-dihydroxyethyl]-2,4,5-trihydroxy-oxane-2-carboxylate