Using O=C1CCC(=O)N1Cl, Clc1cc(Cl)n2c(-c3ccccc3)ncc2n1 to produce Clc1cc(Cl)n2c(-c3ccccc3)nc(Cl)c2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.