Using CN(C)C=O, CCN1c2nc(Cl)ccc2NC(=O)c2cc(Br)cnc21 to produce CCN1c2ncc(Br)cc2C(=O)N(C)c2ccc(Cl)nc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.