[{"from": "human", "value": "Provide a brief overview of this molecule. [C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][C@H1][Branch1][#Branch1][C][C][=Branch1][C][=O][O-1][NH3+1]"}, {"from": "gpt", "value": "The molecule is an optically active form of 3-ammonio-3-phenylpropanoate having (S)-configuration. It is an enantiomer of a (R)-3-ammonio-3-phenylpropanoate. It is a tautomer of a (S)-3-amino-3-phenylpropanoic acid."}]