Using ClC(Cl)(Cl)C(Cl)(Cl)Cl, COc1ccc(Cn2cc3c(=O)n(C)c(=O)n(CC(C)C)c3c2C)cc1 to produce COc1ccc(Cn2c(Cl)c3c(=O)n(C)c(=O)n(CC(C)C)c3c2C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.