Using CCOC(=O)[C@@]1(n2cccc2)CC(=O)NC1=O, O=C(Cl)C(Cl)(Cl)Cl to produce CCOC(=O)[C@@]1(n2cccc2C(=O)C(Cl)(Cl)Cl)CC(=O)NC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.