Using CCOC(=O)c1cc(C(=O)OCC)[nH]n1, CCOC(=O)CCCCBr to produce CCOC(=O)CCCCn1nc(C(=O)OCC)cc1C(=O)OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.