Using O=S(=O)(c1ccccc1)N(F)S(=O)(=O)c1ccccc1, COCCOCCn1c2ccccc2c2cc(Br)ccc21 to produce COCCOCCn1c2ccccc2c2cc(F)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.