Using OB(O)c1ccc(C(F)(F)F)c(Cl)c1, Clc1cc(Cl)ncn1 to produce FC(F)(F)c1ccc(-c2cc(Cl)ncn2)cc1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.