Using COC(=O)[C@H](CC(=O)N1CCC(N2CCc3ccccc3NC2=O)CC1)Cc1cc(Cl)c(O)c(C(F)(F)F)c1 to produce O=C(O)[C@H](CC(=O)N1CCC(N2CCc3ccccc3NC2=O)CC1)Cc1cc(Cl)c(O)c(C(F)(F)F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.