Using CC(C)C1(CCCO)CCN(Cc2cc(C(F)(F)F)cc(C(F)(F)F)c2)C1=O to produce CC(C)C1(CCC=O)CCN(Cc2cc(C(F)(F)F)cc(C(F)(F)F)c2)C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.