Using BrCC12CC3CC(CC(C3)C1)C2, CC1(C)OB(c2cn[nH]c2)OC1(C)C to produce CC1(C)OB(c2cnn(CC34CC5CC(CC(C5)C3)C4)c2)OC1(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.