[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C@@H1][C@H1][Branch2][Ring2][#Branch1][C@@H1][Branch1][N][C@@H1][Branch1][Branch2][C@H1][Branch1][Ring2][O][Ring1][=Branch1][O][O][O][C@@H1][C@H1][Branch2][Ring1][C][C@H1][Branch1][=C][C@@H1][Branch1][Branch2][C@H1][Branch1][Ring2][O][Ring1][=Branch1][C][N][C][=O][O][O][N][C][=O]"}, {"from": "gpt", "value": "The molecule is an amino disaccharide consisting of two N-formyl-alpha-D-perosamine residues linked (1->3); forms the minimal structure for the M epitope of Brucella spp. It has a role as an epitope."}]