Using O=C(c1ccc(F)cc1F)C(F)(F)c1ccc(Br)cn1, Brc1cncnc1 to produce OC(c1cncnc1)(c1ccc(F)cc1F)C(F)(F)c1ccc(Br)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.