Using CSc1nccc(Cl)n1, O=[N+]([O-])c1ccc(O)cc1Cl to produce CSc1nccc(Oc2ccc([N+](=O)[O-])c(Cl)c2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.