SMILES: C1=C(C=[N+](C(=C1CCC(C(=O)O)N)CCCC(C(=O)O)N)CCCCC(C(=O)O)N)CCC(C(=O)O)N
Description: The molecule is a pyridinium ion obtained by formal condensation of four molecules of lysine. It has a role as a biomarker. It is a pyridinium ion and a lysine derivative.