Using CC(=O)Nc1[nH]cc(-c2ccc([N+](=O)[O-])nc2)c1C(N)=O to produce CC(=O)Nc1[nH]cc(-c2ccc(N)nc2)c1C(N)=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.