Using Cc1cccc(Cn2ncc3c(N)cccc32)n1, O=C1CCC(=O)N1Cl to produce Cc1cccc(Cn2ncc3c(N)ccc(Cl)c32)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.