Using CCC(Cc1ccc(OC)c(C(=O)CCc2ccc(C(F)(F)F)cc2)c1)C(=O)O to produce CCC(Cc1ccc(OC)c(CCCc2ccc(C(F)(F)F)cc2)c1)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.