Using COc1ccc(CNc2cc(C(F)(F)F)cc(-c3ccccc3C(F)(F)F)n2)cc1 to produce Nc1cc(C(F)(F)F)cc(-c2ccccc2C(F)(F)F)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.