Using c1ccc2c(N3CCNCC3)nsc2c1, CCC1(CC)CC(=O)NC(=O)C1CCCCBr to produce CCC1(CC)CC(=O)N(CCCCN2CCN(c3nsc4ccccc34)CC2)C(=O)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.