(2S,4S,5R,6R)-5-acetamido-2-[(2R,3R,4S,5S,6R)-2-[(2R,3R,4S,5R)-2-acetamido-6-[(2R,4S,5R,6R)-5-acetamido-2-carboxy-4-hydroxy-6-[(1R,2R)-1,2,3-trihydroxypropyl]oxan-2-yl]oxy-4,5-dihydroxy-1-oxo-hexan-3-yl]oxy-3,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-4-hydroxy-6-[(1R,2R)-1,2,3-trihydroxypropyl]oxane-2-carboxylic acid