Using COc1ccc2ccc(-c3cc4c(cc3N)OCO4)cc2c1, O=N[O-] to produce COc1ccc2ccc3c4cc5c(cc4nnc3c2c1)OCO5, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.