[{"from": "human", "value": "Provide a description of this molecule. [C][C][=Branch1][C][=O][N][C@@H1][C@H1][Branch2][Branch2][Ring1][C@@H1][Branch2][=Branch1][=Branch2][C@H1][Branch2][=Branch1][Ring1][O][C@H1][Ring1][=Branch1][O][C@H1][C@H1][Branch2][Branch1][Branch2][C@H1][Branch2][Branch1][C][O][C@H1][Branch1][Branch1][C@@H1][Ring1][=Branch1][O][O][C@H1][C@H1][Branch2][Ring2][Ring1][C@H1][Branch2][Ring1][=N][O][C@H1][Branch1][Branch1][C@@H1][Ring1][=Branch1][O][O][C@@H1][C@H1][Branch1][=C][O][C@H1][Branch1][=Branch2][C@@H1][Branch1][Branch1][C@H1][Ring1][=Branch1][O][O][O][C][O][C][O][O][C][O][O][C][O][O][C@H1][C@@H1][Branch1][P][C@H1][Branch1][=N][C@H1][Branch1][=Branch2][C@H1][Branch1][Ring2][O][Ring1][=Branch1][C][O][O][O][O][O]"}, {"from": "gpt", "value": "The molecule is a polysaccharide derivative with a repeating unit consisting of beta-D-galactosyl, beta-D-galactosyl and beta-D-glucosyl residues linked sequentially (1->3) and (1->4), to the galactosyl residue at the non-reducing end of which is attached a beta-D-galactosyl-(1->4)-N-acetyl-beta-D-glucosaminyl disaccharide unit via a (1->3) linkage, with all repeating units being linked (1->6). Desialylated capsular polysaccharide of Streptococcus suis serotype 14."}]