Using O=CO, CC(c1c(Cl)ccc(F)c1Cl)c1c[nH]c2ncc(C3=CCNCC3)cc12 to produce CC(c1c(Cl)ccc(F)c1Cl)c1c[nH]c2ncc(C3=CCN(C=O)CC3)cc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.