Using Cn1nnc2ccc(Oc3ccccc3Cn3cncn3)cc21, O=[N+]([O-])[O-] to produce Cn1nnc2ccc(Oc3ccc([N+](=O)[O-])cc3Cn3cncn3)cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.