[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C@H1][Branch1][#C][C][=Branch1][C][=O][N][C@H1][Branch1][C][C][C][=Branch1][C][=O][O][N]"}, {"from": "gpt", "value": "The molecule is a dipeptide comprising D-alanine with a D-alanyl residue attached to the alpha-nitrogen. It is a component of bacterial peptidoglycan and forms an important target for development of antibacterial drugs. It has a role as an Escherichia coli metabolite. It is a tautomer of a D-alanyl-D-alanine zwitterion."}]