Using COC(=O)[C@@H](O)c1c(C)nc2cc(-c3cccc(Cl)c3)nn2c1-c1ccc(F)cc1, CC(=O)OC(C)(C)C to produce COC(=O)[C@@H](OC(C)(C)C)c1c(C)nc2cc(-c3cccc(Cl)c3)nn2c1-c1ccc(F)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.