Using O=C(O)c1ncnc2ccsc12, NCc1ccc([N+](=O)[O-])cc1 to produce O=C(NCc1ccc([N+](=O)[O-])cc1)c1ncnc2ccsc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.