Using CCCC[Sn](CCCC)(CCCC)c1nccs1, CC(C)(C)[Si](C)(C)OC[C@H]1O[C@@H](n2cc(I)c3c(N)ncnc32)[C@H](O[Si](C)(C)C(C)(C)C)[C@@H]1O[Si](C)(C)C(C)(C)C to produce CC(C)(C)[Si](C)(C)OC[C@H]1O[C@@H](n2cc(-c3nccs3)c3c(N)ncnc32)[C@H](O[Si](C)(C)C(C)(C)C)[C@@H]1O[Si](C)(C)C(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.