Using Cc1cc(Cl)c2nc3n(c2n1)C[C@H](NC(=O)OC(C)(C)C)[C@@H](c1cc(F)c(F)cc1F)C3 to produce Cc1ccc2nc3n(c2n1)C[C@H](NC(=O)OC(C)(C)C)[C@@H](c1cc(F)c(F)cc1F)C3, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.