[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a 2,4-diaminopentanoate that is the conjugate base of (2R,4S)-2,4-diaminopentanoic acid. It is a conjugate base of a (2R,4S)-2,4-diaminopentanoic acid."}, {"from": "gpt", "value": "[C][C@@H1][Branch1][O][C][C@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][N][N]"}]