Using CN(C)Cc1cc(NC(=O)OC(C)(C)C)ccc1Br, C[Si](C)(C)Cl to produce CN(C)Cc1cc(NC(=O)OC(C)(C)C)ccc1[Si](C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.