The molecule is a linear tetrasaccharide derivative consisting of an alpha-D-glucosyl residue, two alpha-L-rhamnosyl residues and a 2-O-acetyl-alpha-L-rhamnose at the reducing end.
[(2R,3R,4R,5S,6S)-4-[(2S,3R,4R,5R,6S)-3-[(2S,3R,4R,5S,6S)-3,5-dihydroxy-6-methyl-4-[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-4,5-dihydroxy-6-methyloxan-2-yl]oxy-2,5-dihydroxy-6-methyloxan-3-yl] acetate