[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is an alpha-N-substituted L-arginine, a member of guanidines and an amino dicarboxylic acid. It is a tautomer of a N(2)-(2-carboxyethyl)-L-arginine dizwitterion."}, {"from": "gpt", "value": "[C][Branch2][Ring1][C][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N][C][C][C][=Branch1][C][=O][O][C][N][=C][Branch1][C][N][N]"}]