SMILES: C[C@@H](C(=O)N[C@@H](CC1=CC=CC=C1)C(=O)N[C@@H](CC2=CNC3=CC=CC=C32)C(=O)N[C@@H](CC(=O)N)C(=O)O)N
Description: The molecule is a tetrapeptide composed of L-alanine, L-phenylalanine, L-tryptophan, and L-asparagine joined in sequence by peptide linkages. It has a role as a metabolite. It derives from a L-alanine, a L-phenylalanine, a L-tryptophan and a L-asparagine.