Using COC(=O)c1nc(-c2ccccc2)n2c1CN(C(=O)OC(C)(C)C)CC2, CNOC to produce CON(C)C(=O)c1nc(-c2ccccc2)n2c1CN(C(=O)OC(C)(C)C)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.