Using COc1ccc2nc(-c3n[nH]c4ncc(Br)cc34)[nH]c2c1, C[Si](C)(C)CCOCCl to produce COc1ccc2nc(-c3nn(COCC[Si](C)(C)C)c4ncc(Br)cc34)n(COCC[Si](C)(C)C)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.