Using COC(=O)C1CCC(Nc2ncc(Cl)c(-n3nnc4ccccc43)n2)CC1 to produce O=C(O)[C@H]1CC[C@H](Nc2ncc(Cl)c(-n3nnc4ccccc43)n2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.