Using O=C(Cl)c1ccccc1, CN(C(=O)C1CCn2cccc21)c1ccccc1 to produce CN(C(=O)C1CCn2c(C(=O)c3ccccc3)ccc21)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.