Using O=C1C[C@H]2CCCN2c2nc(Cl)ncc2N1, O=C([O-])[O-] to produce CN1C(=O)C[C@H]2CCCN2c2nc(Cl)ncc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.