2-[(6-{[3,5-dihydroxy-2-(hydroxymethyl)-6-[(1,2,4,5-tetrahydroxy-6-oxohexan-3-yl)oxy]oxan-4-yl]oxy}-5-acetamido-3-hydroxy-4-{[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}oxan-2-yl)methoxy]-5-acetamido-4-hydroxy-6-(1,2,3-trihydroxypropyl)oxane-2-carboxylic acid