Using CC(C)(C)OC(=O)N1CCC(CBr)CC1, O=c1[nH]ccc2c(Cl)c(Cl)ccc12 to produce CC(C)(C)OC(=O)N1CCC(Cn2ccc3c(Cl)c(Cl)ccc3c2=O)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.