Using O=Cc1ccc(Cl)c(Cl)c1, CS(=O)(=O)NN1C(=O)CSC1=S to produce CS(=O)(=O)NN1C(=O)C(=Cc2ccc(Cl)c(Cl)c2)SC1=S, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.