Using Cc1cc(Nc2nccc(C(F)(F)F)n2)cc(-c2cnc(CO)s2)c1, O=C1CCC(=O)N1Br to produce Cc1cc(Nc2nccc(C(F)(F)F)n2)cc(-c2cnc(CBr)s2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.