Using O=C(Cl)c1c(Cl)cccc1Cl, Nc1nc(C(F)(F)F)c(I)s1 to produce O=C(Nc1nc(C(F)(F)F)c(I)s1)c1c(Cl)cccc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.