Using CC1(C)OB(c2ccc(N3CCNCC3)cc2)OC1(C)C, CC(C)(C)[Si](C)(C)OCCBr to produce CC1(C)OB(c2ccc(N3CCN(CCO[Si](C)(C)C(C)(C)C)CC3)cc2)OC1(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.