[{"from": "human", "value": "Describe this molecule. [C][Branch1][#C][C][C][NH2+1][C][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1][C][NH3+1]"}, {"from": "gpt", "value": "The molecule is the alpha-amino-acid cation formed from carboxyspermidine by zwitterion formation between the carboxy and alpha-amino groups and protonation of the nitrogen atoms at positions 5 and 10; the major structure of carboxyspermidine at pH 7.3. It is a conjugate acid of a carboxyspermidine."}]