SMILES: C[C@@H](C(=O)[O-])NC(=O)[C@H](CC1=CC=CC=C1)[NH3+]
Description: The molecule is a peptide zwitterion obtained by transfer of a proton from the carboxy to the amino terminus of Phe-Ala; major species at pH 7.3. It is a tautomer of a Phe-Ala.