The molecule is a disaccharide derivative consisting of a 3-deoxy-alpha-D-manno-oct-2-ulopyranonosyl residue and a 3-deoxy-7-O-methyl-alpha-D-manno-oct-2-ulopyranonosyl joined via an alpha-(2->8)-linkage. It has a role as an antigen.
(2R,4R,5R,6S)-6-[(1R)-2-[(2R,4R,5R,6R)-2-carboxy-6-[(1R)-1,2-dihydroxyethyl]-4,5-dihydroxyoxan-2-yl]oxy-1-methoxyethyl]-2,4,5-trihydroxyoxane-2-carboxylic acid