Using CC(O)CCBr, O=S1(=O)Nc2ccccc2N1c1ccccc1F to produce CC(CCBr)N1c2ccccc2N(c2ccccc2F)S1(=O)=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.