[{"from": "human", "value": "Provide a brief overview of this molecule. [C][Branch2][Ring1][#Branch2][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH2+1][C@H1][Branch1][Branch2][C][C][C][=Branch1][C][=O][O-1][C][=Branch1][C][=O][O-1][C][NH1+1][=C][Branch1][C][N][N]"}, {"from": "gpt", "value": "The molecule is conjugate base of D-nopaline in which the three carboxy groups are anionic and the secondary amino and guanidino groups are cationic; major species at pH 7.3. It is a conjugate base of a D-nopaline."}]