Using Cn1cc(-c2cnc3[nH]cc(C(O)c4c(Cl)ccc(OCC(F)(F)F)c4Cl)c3c2)cn1 to produce Cn1cc(-c2cnc3[nH]cc(C(=O)c4c(Cl)ccc(OCC(F)(F)F)c4Cl)c3c2)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.