Using O=C(Cl)c1c(Cl)cccc1Cl, CN1CCC(c2c[nH]c3ccncc23)CC1 to produce CN1CCC(c2cn(C(=O)c3c(Cl)cccc3Cl)c3ccncc23)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.