SMILES: C1CN[C@@H](CN1)C(=O)O
Description: The molecule is a piperazine-2-carboxylic acid having (S)-configuration. It is a conjugate acid of a (S)-piperazine-2-carboxylate. It is an enantiomer of a (R)-piperazine-2-carboxylic acid. It is a tautomer of a (S)-piperazine-2-carboxylic acid zwitterion.