Using COC(=O)c1cnc(N2CCN(C(=O)OC(C)(C)C)CC2)c2nncn12 to produce CC(C)(C)OC(=O)N1CCN(c2ncc(CO)n3cnnc23)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.