Using O=[N+]([O-])c1ccc(CBr)cc1, COC(=O)Cc1c(C)n[nH]c1C to produce COC(=O)Cc1c(C)nn(Cc2ccc([N+](=O)[O-])cc2)c1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.