Using Brc1ccc2[nH]c3c(c2c1)CCCC3NC1Cc2ccccc2C1 to produce Brc1ccc2[nH]c3c(c2c1)CCC[C@H]3NC1Cc2ccccc2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.