Using Cn1c([N+](=O)[O-])cnc1C1=CNN(N)S1, O=C([O-])O to produce Cn1c([N+](=O)[O-])cnc1C1=CNN(NC=O)S1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.