Using COC(=O)c1c(NC(=O)C(C)(C)C)ccc2c1OCc1nnc(Cl)cc1-2 to produce COC(=O)c1c(NC(=O)C(C)(C)C)ccc2c1OCc1nnccc1-2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.