Using Cn1c(=O)cc(CCBr)c2ccccc21, c1ccc2c(C3CCNCC3)c[nH]c2c1 to produce Cn1c(=O)cc(CCN2CCC(c3c[nH]c4ccccc34)CC2)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.