Using O=[N+]([O-])c1cnn(-c2c(Cl)cc(Cl)cc2Cl)c1Cl, [OH-] to produce O=[N+]([O-])c1cnn(-c2c(Cl)cc(Cl)cc2Cl)c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.