[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule is zwitterionic form of (2-aminoethyl)phosphonic acid. It is a tautomer of a (2-aminoethyl)phosphonic acid."}, {"from": "gpt", "value": "[C][Branch1][#Branch2][C][P][=Branch1][C][=O][Branch1][C][O][O-1][NH3+1]"}]