Using O=C(Cl)CN1C(=O)c2ccccc2C1=O, O=C1Nc2ccccc2NC2CCCC12 to produce O=C1Nc2ccccc2N(C(=O)CN2C(=O)c3ccccc3C2=O)C2CCCC12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.