Using CCOC(C)=O, CC(=O)OCC1=CS[C@@H]2C(NC(=O)Cc3ccccc3)C(=O)N2C1C(=O)O to produce COc1ccc(CC2=CS[C@@H]3C(NC(=O)Cc4ccccc4)C(=O)N3C2C(=O)O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.