[{"from": "human", "value": "Describe this molecule. [C][C@@H1][C@H1][Branch2][Ring1][S][C@@H1][Branch1][N][C@@H1][Branch1][Branch2][C@H1][Branch1][Ring2][O][Ring1][=Branch1][O][O][O][C@@H1][C][C@H1][Branch1][O][C@@H1][Branch1][Branch1][C][O][Ring1][=Branch1][N][C][=O][O][N][C][=O]"}, {"from": "gpt", "value": "The molecule is an amino disaccharide consisting of a 4-formamido-alpha-D-threo-pentopyranosyl residue linked (1->3) to anN-formyl-alpha-D-perosamine residue."}]