Using CC(C)(C)OC(=O)N1CCOC(c2ccc(Cl)c(Cl)c2)C(CC#N)C1, O=C([O-])O to produce CC(C)(C)OC(=O)N1CCOC(c2ccc(Cl)c(Cl)c2)C(CC(N)=O)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.