Using CI, Cc1cc(OCc2c(C(C)C)cnn2-c2c(Cl)cccc2Cl)ccc1NC(=O)OC(C)(C)C to produce Cc1cc(OCc2c(C(C)C)cnn2-c2c(Cl)cccc2Cl)ccc1N(C)C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.