Using O=[N+]([O-])c1cc(Br)nc(Nc2cc(C(F)(F)F)ccn2)c1 to produce Nc1cc(Br)nc(Nc2cc(C(F)(F)F)ccn2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.