SMILES: C([C@@H](C(=O)[O-])[NH3+])NC(=O)/C=C/C(=O)N
Description: The molecule is an L-alpha-amino acid zwitterion that results from the transfer of a proton from the carboxylic acid group to the alpha-amino group of N(3)-fumaramoyl-(S)-2,3-diaminopropanoic acid; major species at pH 7.3. It is a tautomer of a N(3)-fumaramoyl-(S)-2,3-diaminopropanoic acid.