Using ClCCCCBr, CCOC(=O)Nc1cc([N+](=O)[O-])ccc1C(=O)OC to produce CCOC(=O)N(CCCCCl)c1cc([N+](=O)[O-])ccc1C(=O)OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.