SMILES: C1=C(C(=CC(=O)C1=O)NCCCC[C@@H](C(=O)O)N)C[C@@H](C(=O)O)N
Description: The molecule is an L-lysine derivative in which one of the amino hydrogens at N(6)-amino is substituted by a 6-[(2S)-2-amino-2-carboxyethyl]-3,4-dioxocyclohexa-1,5-dien-1-yl group. It is a L-lysine derivative, a L-tyrosine derivative, a non-proteinogenic L-alpha-amino acid and a member of 1,2-benzoquinones.