Using COc1ccc2c(c1)C(=O)CCC2c1cccc(C(F)(F)F)c1 to produce O=C1CCC(c2cccc(C(F)(F)F)c2)c2ccc(O)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.