SMILES: C1=C[N+](=CN1CCCC[C@@H](C(=O)O)N)CCCC[C@@H](C(=O)O)N
Description: The molecule is an imidazolium ion formed via cyclo-dimerisation of L-lysine and glyoxal. It has a role as an epitope. It is an imidazolium ion, a L-lysine derivative and a non-proteinogenic L-alpha-amino acid.