Using O=C(O)c1cccc(O)c1, FC(F)(F)c1ccc(Cl)c(Cl)c1 to produce O=C(O)c1cccc(Oc2ccc(C(F)(F)F)cc2Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.