Using CON(C)C(=O)c1cc(Cl)ncn1, Cc1cc(Br)cc2cnn(COCC[Si](C)(C)C)c12 to produce Cc1cc(C(=O)c2cc(Cl)ncn2)cc2cnn(COCC[Si](C)(C)C)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.