The molecule is a methyl glycoside in which the glycosyl moiety consists of three alpha-D-galactosyl-(1->2)-[alpha-abequosyl-(1->3)]-alpha-D-mannosyl-(1->4)-alpha-L-rhamnosyl tetrasaccharide units all linked sequentially (1->4). Corresponds to the O polysaccharide of Salmonella Typhimurium, a serogroup B nontyphoidal Salmonella serovar. It is a methyl glycoside and an oligosaccharide derivative.
(2R,3R,4S,5R,6R)-2-[(2R,3S,4S,5R,6R)-2-[(2S,3R,4S,5R,6S)-6-[(2R,3R,4S,5S,6R)-2-[(2R,3S,4S,5R,6R)-2-[(2S,3R,4S,5R,6S)-6-[(2R,3R,4S,5S,6R)-2-[(2R,3S,4S,5R,6R)-2-[(2S,3R,4S,5R,6R)-4,5-dihydroxy-6-methoxy-2-methyloxan-3-yl]oxy-4-[(2R,3R,5R,6R)-3,5-dihydroxy-6-methyloxan-2-yl]oxy-5-hydroxy-6-(hydroxymethyl)oxan-3-yl]oxy-3,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-4,5-dihydroxy-2-methyloxan-3-yl]oxy-4-[(2R,3R,5R,6R)-3,5-dihydroxy-6-methyloxan-2-yl]oxy-5-hydroxy-6-(hydroxymethyl)oxan-3-yl]oxy-3,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-4,5-dihydroxy-2-methyloxan-3-yl]oxy-4-[(2R,3R,5R,6R)-3,5-dihydroxy-6-methyloxan-2-yl]oxy-5-hydroxy-6-(hydroxymethyl)oxan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol