Using CCOC(=O)CCCCCCBr, O=C1CCc2nc(Br)c(Cl)nc2N1 to produce CCOC(=O)CCCCCCN1C(=O)CCc2nc(Br)c(Cl)nc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.