SMILES: C1=CC=C(C=C1)C[C@@H](C(=O)N[C@@H](CC2=CC=CC=C2)C(=O)N[C@@H](CS)C(=O)O)NC(=O)[C@H](CCCN=C(N)N)N
Description: The molecule is a tetrapeptide composed of L-arginine, two L-phenylalanine units and L-cysteine joined in sequence by peptide linkages. It has a role as a metabolite. It derives from a L-arginine, a L-phenylalanine and a L-cysteine.