Using COC(=O)c1cnc(Cl)cn1, OB(O)c1ccc(C(F)(F)F)cc1 to produce COC(=O)c1cnc(-c2ccc(C(F)(F)F)cc2)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.