[{"from": "human", "value": "Generate a molecule based on this description. The molecule is the (2S)-enantiomer of 2-ureidoglycine. It is a tautomer of a (S)-2-ureidoglycine zwitterion."}, {"from": "gpt", "value": "[C@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][Branch1][C][N][N][C][=Branch1][C][=O][N]"}]