Using CC(=O)O, CCC(=O)NCc1ccc(N2CCC(c3cc(Cl)c(Cl)c(Cl)c3)(C(F)(F)F)C2)nc1C to produce CCC(=O)NCc1ccc(N2CCC(c3cc(Cl)c(Cl)c(Cl)c3)(C(F)(F)F)C2O)nc1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.