Using O=c1[nH]c2ccc([N+](=O)[O-])cc2[nH]c1=O, COC(=O)c1cccc(CBr)c1 to produce COC(=O)c1cccc(Cn2c(=O)c(=O)[nH]c3cc([N+](=O)[O-])ccc32)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.