Using C=C[Sn](CCCC)(CCCC)CCCC, FC(F)(F)c1cc(Cl)c(-n2cc(I)c(-c3ccccc3)n2)c(Cl)c1 to produce C=Cc1cn(-c2c(Cl)cc(C(F)(F)F)cc2Cl)nc1-c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.