Using CC(=O)CCNc1ccc(I)cn1, C[Sn](C)(C)c1ccc(C2COC(c3c(F)cccc3F)=N2)cc1 to produce CC(=O)CCNc1ccc(-c2ccc(C3COC(c4c(F)cccc4F)=N3)cc2)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.