Using COc1cc2ccc(-c3cc4c(cc3[N+](=O)[O-])OCO4)c(C=O)c2cc1OC to produce COc1cc2ccc3c4cc5c(cc4ncc3c2cc1OC)OCO5, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.