Using CC(C)Oc1ccc(-c2nnc(-c3cccc4c3CC[C@H]4N)s2)cc1C#N, CC(C)(C)[Si](C)(C)OCCBr to produce CC(C)Oc1ccc(-c2nnc(-c3cccc4c3CC[C@H]4NCCO[Si](C)(C)C(C)(C)C)s2)cc1C#N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.