[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule is an optically active phosphonic acid having a 1-aminoethyl group attached to the phosphorus. It is a member of phosphonic acids and a primary amino compound. It is functionally related to a phosphonic acid. It is an enantiomer of a (S)-(1-aminoethyl)phosphonic acid."}, {"from": "gpt", "value": "[C][C@H1][Branch1][C][N][P][=Branch1][C][=O][Branch1][C][O][O]"}]