SMILES: C1[C@@H]([C@H]([C@H](N1)C(=O)O)O)O
Description: The molecule is a L-proline derivative that is L-proline substituted by hydroxy groups at positions 3 and 4 (the 3S,4S diastereoisomer). It is a dihydroxyproline, a dihydroxypyrrolidine, a pyrrolidinemonocarboxylic acid, a L-proline derivative and a non-proteinogenic L-alpha-amino acid.