SMILES: C1C=CC(C(C1=O)[NH3+])C(=O)[O-]
Description: The molecule is an amino acid zwitterion, obtained by transfer of a proton from the carboxylic acid group to the amino group of 6-amino-5-oxocyclohex-2-ene-1-carboxylic acid zwitterion. It is a tautomer of a 6-amino-5-oxocyclohex-2-ene-1-carboxylic acid.