Using CCOC(=O)C(Cc1ccc(OC)c(C(=O)NCc2ccc(C(F)(F)F)cc2)c1)OCC to produce CCOC(Cc1ccc(OC)c(C(=O)NCc2ccc(C(F)(F)F)cc2)c1)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.