Using CNc1nccc(Oc2ccc(O)cc2)n1, O=[N+]([O-])O to produce CNc1nccc(Oc2ccc(O)c([N+](=O)[O-])c2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.