Using Clc1cc(Cl)ncn1, OC(c1ccc(F)c(F)c1)C(F)(F)F to produce Fc1ccc(C(Oc2cc(Cl)ncn2)C(F)(F)F)cc1F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.