Using CS(=O)(=O)OCCc1cccnc1[N+](=O)[O-], [N-]=[N+]=[N-] to produce [N-]=[N+]=NCCc1cccnc1[N+](=O)[O-], please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.