Using CNc1ccccc1C(=O)n1nc(O)c2cc([N+](=O)[O-])ccc21 to produce CNc1ccccc1C(=O)n1nc(O)c2cc(N)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.