SMILES: C1[C@H](C[NH2+][C@@H]1C(=O)[O-])O
Description: The molecule is an L-alpha-amino acid zwitterion arising from transfer of a proton from the carboxy to the amino group of trans-4-hydroxy-L-proline; major species at pH 7.3. It is a tautomer of a trans-4-hydroxy-L-proline.