Using Nc1ccc2c(c1)C13CC2c2ccccc2C1CN(CC1CCCC1)C3, Br to produce Brc1ccc2c(c1)C13CC2c2ccccc2C1CN(CC1CCCC1)C3, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.