[{"from": "human", "value": "Describe this molecule. [C][=C][N+1][=Branch2][Ring1][C][=C][N][Ring1][Branch1][C][C][C][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N][C][C][C][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N]"}, {"from": "gpt", "value": "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."}]