Using Fc1cccc(Cn2c3c(c4cccnc42)CCNC3)c1, O=C(Cl)CCl to produce O=C(CCl)N1CCc2c(n(Cc3cccc(F)c3)c3ncccc23)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.