Using CN1c2cc(Br)ccc2NS1(=O)=O, C[Si](C)(C)CCOCCl to produce CN1c2cc(Br)ccc2N(COCC[Si](C)(C)C)S1(=O)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.