Using CCOC(=O)[C@@H]1CCCN(c2ccc3nc(C4(n5cc(Cl)cn5)CC4)[nH]c3n2)C1 to produce O=C(O)[C@@H]1CCCN(c2ccc3nc(C4(n5cc(Cl)cn5)CC4)[nH]c3n2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.