Using COC(=O)COc1ccc(F)c2[nH]c(=O)c(Cc3ccc(Cl)cc3)c(C)c12, CC(=O)OC(F)(F)Cl to produce COC(=O)COc1ccc(F)c2nc(OC(F)F)c(Cc3ccc(Cl)cc3)c(C)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.