Using O=C(O)CCc1conc1-c1ccc(Cl)cc1, NCc1cccc(C(F)(F)F)c1 to produce O=C(CCc1conc1-c1ccc(Cl)cc1)NCc1cccc(C(F)(F)F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.