Using COC(=O)c1cc(Cl)cc(NS(=O)(=O)C(F)(F)F)c1Cl to produce O=C(O)c1cc(Cl)cc(NS(=O)(=O)C(F)(F)F)c1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.