Using CC(C)(C)OC(=O)N[C@H](Cc1ccccc1)C(=O)O[C@@H](Cc1c(Cl)c[n+]([O-])cc1Cl)c1ccc(OC(F)F)c(OCC2CC2)c1 to produce N[C@H](Cc1ccccc1)C(=O)O[C@@H](Cc1c(Cl)c[n+]([O-])cc1Cl)c1ccc(OC(F)F)c(OCC2CC2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.