Using COC(=O)N1CCC(n2c(=O)[nH]c3cc(Cl)ccc32)C(C)C1 to produce CC1CNCCC1n1c(=O)[nH]c2cc(Cl)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.