[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is zwitterionic form of anserine. It has a role as an animal metabolite. It is a tautomer of an anserine."}, {"from": "gpt", "value": "[C][N][C][=N][C][=C][Ring1][Branch1][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][N][C][=Branch1][C][=O][C][C][NH3+1]"}]