SMILES: C[C@@H](C(=O)N1CCC[C@H]1C(=O)NCC(=O)[O-])[NH3+]
Description: The molecule is a tripeptide zwitterion resulting from the transfer of a proton from the carboxy group to the amino group of Ala-Pro-Gly. Major microspecies at pH 7.3. It is a tautomer of an Ala-Pro-Gly.