The molecule is the 2-aminoethyl glycoside of an amino decasaccharide made of two alpha-L-Rhap-(1->2)-alpha-L-Rhap-(1->3)-[alpha-D-Glcp-(1->4)]-alpha-L-Rhap-(1->3)-beta-D-GlcpNAc repeating units of the Shigella flexneri serotype 2a specific polysaccharide linked (1->2) and with the rhamnose residue four residues from the reducing end acetylated on O-3.
[(2S,3R,4R,5S,6S)-2-[(2S,3R,4R,5R,6S)-2-[(2S,3R,4S,5S,6S)-2-[(2R,3R,4R,5S,6R)-3-acetamido-2-(2-aminoethoxy)-5-hydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-3-hydroxy-6-methyl-5-[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-4-yl]oxy-4,5-dihydroxy-6-methyloxan-3-yl]oxy-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-5-hydroxy-6-methyloxan-4-yl] acetate