Using O=C=Nc1ccc(Cl)c(Cl)c1, CCc1sc(S(N)(=O)=O)cc1C to produce CCc1sc(S(=O)(=O)NC(=O)Nc2ccc(Cl)c(Cl)c2)cc1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.