Using O=C(c1ccccc1Cl)c1ncc(Cl)nc1Cl, COC(=O)Cc1ccccc1F to produce COC(=O)C(c1cnc(C(=O)c2ccccc2Cl)c(Cl)n1)c1ccccc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.