Using CCc1ccc2c(-c3cccc(Cl)c3)nc(=O)n(CC)c2n1, O=C1CCC(=O)N1Br to produce CCn1c(=O)nc(-c2cccc(Cl)c2)c2ccc(C(C)Br)nc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.