Using C[Sn](C)(C)Cl, Cc1nc(I)cn1CC(C)(C)O[Si](C)(C)C(C)(C)C to produce Cc1nc([Sn](C)(C)C)cn1CC(C)(C)O[Si](C)(C)C(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.