Using CC(=O)CBr, CC(C)(C)[SiH2]OC(c1ccccc1)(c1ccccc1)c1cnc(N)cn1 to produce Cc1cn2cc(C(O[SiH2]C(C)(C)C)(c3ccccc3)c3ccccc3)ncc2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.