The molecule is a branched tetrasaccharide consisting of alpha-D-galactose, alpha-D-mannose and alpha-L-rhamnose residues linked sequentially (1->2) and (1->4), to the mannose residue of which is also linked (1->3) an alpha-D-abequose residue. The structure constitutes a possible epitope of the O-antigen polysaccharide in Salmonella. It has a role as an epitope.
(2R,3R,4S,5R,6S)-5-[(2R,3S,4S,5R,6R)-4-[(2R,3R,5R,6R)-3,5-dihydroxy-6-methyloxan-2-yl]oxy-5-hydroxy-6-(hydroxymethyl)-3-[(2R,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-6-methyloxane-2,3,4-triol