Using CCCn1nc(-c2ccc(O)c(F)c2)c2cccc(Cl)c21, CC(C)(C)CC(=O)Cl to produce CCCn1nc(-c2ccc(OC(=O)CC(C)(C)C)c(F)c2)c2cccc(Cl)c21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.