Using BrC(Br)(Br)Br, CC(=O)c1cn(-c2c(Cl)cc(C(F)(F)F)cc2Cl)nc1C#N to produce CC(=C(Br)Br)c1cn(-c2c(Cl)cc(C(F)(F)F)cc2Cl)nc1C#N, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.