Using CCOC(=O)Cc1c(C)n[nH]c1C, O=[N+]([O-])c1ccc(CBr)c(Cl)c1 to produce CCOC(=O)Cc1c(C)nn(Cc2ccc([N+](=O)[O-])cc2Cl)c1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.