Using COc1ccc(COc2cc(C)nc3c(OCc4c(Cl)ccc([N+](=O)[O-])c4Cl)cccc23)cc1OC to produce Cc1cc(O)c2cccc(OCc3c(Cl)ccc([N+](=O)[O-])c3Cl)c2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.