[{"from": "human", "value": "Describe this molecule. [C][C][N][C@@H1][Branch1][Branch1][C][N][Ring1][=Branch1][C][=Branch1][C][=O][N]"}, {"from": "gpt", "value": "The molecule is a piperazine-2-carboxamide having (S)-configuration. It is a conjugate base of a (S)-piperazin-4-ium-2-carboxamide(1+). It is an enantiomer of a (R)-piperazine-2-carboxamide."}]