Using O=C(O)c1nc2ccnn2c(F)c1Cl, Nc1ccc(Br)cc1F to produce O=C(O)c1nc2ccnn2c(F)c1Nc1ccc(Br)cc1F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.