Using COc1cc(I)cc(OC)c1OC, COc1ccc2c(C=O)c([Si](C)(C)C(C)(C)C)oc2c1 to produce COc1ccc2c(C(=O)c3cc(OC)c(OC)c(OC)c3)c([Si](C)(C)C(C)(C)C)oc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.