Using CCO, COC(=O)Cc1cc(Br)c(Oc2ccc(N)c([N+](=O)[O-])c2)c(Br)c1 to produce O=C(O)Cc1cc(Br)c(Oc2ccc3nc[nH]c3c2)c(Br)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.