The molecule is the branched decasaccharide formed when two molecules of the Shigella flexneri O-antigen core pentasaccharide alpha-L-Rha-(1->2)-alpha-L-Rha-(1->3)-[alpha-D-Glc-(1->4)]-alpha-L-Rha-(1->3)-beta-D-GlcNAc are joined end to end via beta-(1->2) linkages.
N-[(2R,3R,4R,5S,6R)-4-[(2S,3R,4S,5S,6S)-4-[(2S,3R,4R,5R,6S)-3-[(2S,3R,4R,5R,6S)-3-[(2S,3R,4R,5S,6R)-3-acetamido-4-[(2S,3R,4S,5S,6S)-4-[(2S,3R,4R,5R,6S)-4,5-dihydroxy-6-methyl-3-[(2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxyoxan-2-yl]oxy-3-hydroxy-6-methyl-5-[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-5-hydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-4,5-dihydroxy-6-methyloxan-2-yl]oxy-4,5-dihydroxy-6-methyloxan-2-yl]oxy-3-hydroxy-6-methyl-5-[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-2,5-dihydroxy-6-(hydroxymethyl)oxan-3-yl]acetamide