Using CC(O)c1ccc2c(c1)cc(-c1cc3ccccc3nc1Cl)n2C(=O)OC(C)(C)C to produce CC(=O)c1ccc2c(c1)cc(-c1cc3ccccc3nc1Cl)n2C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.