Using C[Si](C)(C)CCOCCl, Cc1cc2c(cc1Br)N1C(=NNC(=O)C1C)CO2 to produce Cc1cc2c(cc1Br)N1C(=NN(COCC[Si](C)(C)C)C(=O)C1C)CO2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.