SMILES: CSCC[C@@H](C(=O)N[C@@H](CCSC)C(=O)N[C@@H](CCSC)C(=O)O)NC(=O)[C@H](CCCCN)N
Description: The molecule is a tetrapeptide composed of L-lysine and three L-methionine units joined in sequence by peptide linkages. It has a role as a metabolite. It derives from a L-lysine and a L-methionine.