[{"from": "human", "value": "Describe this molecule. [C][C@H1][C@@H1][Branch2][Ring2][=Branch1][C@H1][Branch2][Ring1][P][C@H1][Branch2][Ring1][N][C@@H1][Branch1][Ring2][O][Ring1][=Branch1][O][C@@H1][C@H1][Branch1][S][C@H1][Branch1][N][C@H1][Branch1][#Branch1][O][C@H1][Ring1][=Branch1][O][C][C][O][O][O][O][O][O]"}, {"from": "gpt", "value": "The molecule is a methyl glycoside that consists of methyl beta-D-galactoside having an alpha-L-rhamnosyl residue at the 2-position. A core disaccharide from the Streptococcus pneumoniae type 23F capsular polysaccharide antigen. It is a disaccharide derivative, a beta-D-galactoside and a methyl glycoside."}]