Using Oc1ccc(F)cc1F, O=S(=O)(c1ccc(F)c(Br)c1)N1CCCC1 to produce O=S(=O)(c1ccc(Oc2ccc(F)cc2F)c(Br)c1)N1CCCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.