Using O=C(OCc1ccccc1)N1CCC(C(O)C(F)(F)F)CC1 to produce O=C(OCc1ccccc1)N1CCC(C(=O)C(F)(F)F)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.