Using CNC(=O)C(F)(C1CCc2c([nH]c3ccc(Cl)cc23)C1)S(=O)(=O)c1ccccc1, CC(C)(C)OC(=O)OC(C)(C)C to produce CNC(=O)C(F)(C1CCc2c(n(C(=O)OC(C)(C)C)c3ccc(Cl)cc23)C1)S(=O)(=O)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.