Using O=[N+]([O-])c1nonc1N=Nc1nonc1[N+](=O)[O-] to produce O=[N+]([O-])c1nonc1NNc1nonc1[N+](=O)[O-], please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.