Using CCCN(CCC)c1cccc2[nH]c(=O)n(C)c12, O=C1CCC(=O)N1Br to produce CCCN(CCC)c1ccc(Br)c2[nH]c(=O)n(C)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.