Using COc1ccccc1S, C[Si](C)(C)CCOCn1cc(I)c2c(Cl)ncnc21 to produce COc1ccccc1Sc1c[nH]c2ncnc(Cl)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.