Using OCC1CN(Cc2ccc(C(F)(F)F)cc2C(F)(F)F)C1 to produce O=CC1CN(Cc2ccc(C(F)(F)F)cc2C(F)(F)F)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.