Using CCCCc1nc(Cl)c(C=O)[nH]1, O=C([O-])C(c1ccc(CBr)cc1)C1CCCC1 to produce CCCCc1nc(Cl)c(C=O)n1Cc1ccc(C(C(=O)OC(C)(C)C)C2CCCC2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.