Using CCOC(=O)c1cc(Cl)cc(Cl)c1N(S(=O)(=O)c1ccc(Cl)cc1)S(=O)(=O)c1ccc(Cl)cc1 to produce O=C(O)c1cc(Cl)cc(Cl)c1NS(=O)(=O)c1ccc(Cl)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.