[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a 2-(3-amino-3-carboxypropyl)-L-histidine dizwitterion arising from transfer of two protons from the carboxy to the amino groups of 2-[(3S)-3-amino-3-carboxypropyl]-L-histidine. It is a tautomer of a 2-[(3S)-3-amino-3-carboxypropyl]-L-histidine."}, {"from": "gpt", "value": "[C][=C][Branch2][Ring1][Ring1][N][C][=Branch1][Ring2][=N][Ring1][Branch1][C][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1]"}]