SMILES: C1=C(C(=CC(=O)C1=O)O)CC(C(=O)O)N
Description: The molecule is a non-proteinogenic alpha-amino acid that is alanine substituted at position 3 by a 2-hydroxy-1,4-benzoquinon-5-yl group. It is a non-proteinogenic alpha-amino acid and a member of monohydroxy-1,4-benzoquinones. It is a tautomer of a topaquinone zwitterion.