Using CC(C)OB(OC(C)C)OC(C)C, CC(C)[Si](OC(=O)N1CCN(c2ccc(Br)cc2)CC1)(C(C)C)C(C)C to produce CC(C)[Si](OC(=O)N1CCN(c2ccc(B(O)O)cc2)CC1)(C(C)C)C(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.