Using CCOP(=O)(OCC)C(F)(F)c1ccc(C)cc1Br, O=C1CCC(=O)N1Br to produce CCOP(=O)(OCC)C(F)(F)c1ccc(CBr)cc1Br, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.