SMILES: C1=CC(=C(C=C1C[C@H](C(=O)[O-])[NH3+])O)O
Description: The molecule is an amino acid zwitterion obtained from the transfer of a proton from the carboxy group to the amino group of D-dopa. Major microspecies at pH 7.3. It is an enantiomer of a L-dopa zwitterion. It is a tautomer of a D-dopa.