Using O=[N+]([O-])c1ccc(O)c2ccccc12, Nc1cc(CO)ccn1 to produce Nc1cc(COc2ccc([N+](=O)[O-])c3ccccc23)ccn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.