Using CCSc1c(C(N)=O)cnn2cc(-c3ccc(C#N)cc3)cc12, O=S([O-])OO to produce CCS(=O)c1c(C(N)=O)cnn2cc(-c3ccc(C#N)cc3)cc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.