Using CCOC(=O)n1nc(NC(=O)c2ccncc2N2C(=O)c3ccccc3C2=O)c2c1CCN(C(=O)OC(C)(C)C)C2 to produce CC(C)(C)OC(=O)N1CCc2[nH]nc(NC(=O)c3ccncc3N)c2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.