Using CCC(C)(C)C(=O)n1cnc2c1c(=O)[nH]c(=O)n2C, CC(=O)CCCCBr to produce CCC(C)(C)C(=O)n1cnc2c1c(=O)n(CCCCC(C)=O)c(=O)n2C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.