SMILES: C[C@@H](C(=O)N[C@@H](CC(=O)N)C(=O)N[C@@H](CCC(=O)N)C(=O)N[C@@H](CO)C(=O)O)N
Description: The molecule is a tetrapeptide composed of L-alanyl, L-asparagyl, L-glutamyl, and L-serine residues joined in sequence. It has a role as a metabolite. It derives from a L-alanine, a L-asparagine, a L-glutamine and a L-serine.