Using O=P(Cl)(Cl)Cl, CC(=O)c1ccccc1NC(=O)CN1C(=O)c2ccccc2C1=O to produce Cc1c(N2C(=O)c3ccccc3C2=O)c(Cl)nc2ccccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.