Using CCOCCl, O=S(=O)(c1ccc(Cl)cc1)c1c(-c2ccc(Cl)cc2)[nH]c(C(F)(F)F)c1Br to produce CCOCn1c(-c2ccc(Cl)cc2)c(S(=O)(=O)c2ccc(Cl)cc2)c(Br)c1C(F)(F)F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.