Using CC1(C)CN(C2CCCC2)c2nc(Cl)ncc2NC1=O, O=C([O-])[O-] to produce CN1C(=O)C(C)(C)CN(C2CCCC2)c2nc(Cl)ncc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.