Using O=C1CCC(=O)N1Br, CCc1cc(-c2ncc(C(F)(F)F)cc2Cl)n2ncnc2n1 to produce CC(Br)c1cc(-c2ncc(C(F)(F)F)cc2Cl)n2ncnc2n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.