Using C[Si](C)(C)CCOCn1ccc2cccc(Br)c21, COC(=O)C(=O)OC to produce COC(=O)C(=O)c1cccc2ccn(COCC[Si](C)(C)C)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.