Using CCCCCCCCCCCCCCCCCCO, COC1OCC(CNC(=O)C(F)(F)F)O1 to produce CCCCCCCCCCCCCCCCCCOC1OCC(CNC(=O)C(F)(F)F)O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.