Using Cc1cnc(C(=O)Cn2cccc2)cn1, O=C(Cl)C(Cl)(Cl)Cl to produce Cc1cnc(C(=O)Cn2cccc2C(=O)C(Cl)(Cl)Cl)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.