Using Nc1ccc(-c2ccc(C(F)(F)F)cc2)cn1, O=C1CCC(=O)N1Br to produce Nc1ncc(-c2ccc(C(F)(F)F)cc2)cc1Br, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.