Using OB(O)c1ccc(OC(F)(F)F)cc1, COc1cc(-n2ccc(Cl)cc2=O)ccc1OCC(C)(C)O to produce COc1cc(-n2ccc(-c3ccc(OC(F)(F)F)cc3)cc2=O)ccc1OCC(C)(C)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.