Using C[Si](C)(C)CCOCCl, CC(C)(C)OC(=O)N1CC(O)CC1c1ncc(-c2ccc(Br)cc2)[nH]1 to produce CC(C)(C)OC(=O)N1CC(O)CC1c1nc(-c2ccc(Br)cc2)cn1COCC[Si](C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.