Using O=C1CCCN1, O=c1[nH]c2cc(Cc3cccc(Br)c3)nn2c2ccccc12 to produce O=C1CCCN1c1cccc(Cc2cc3[nH]c(=O)c4ccccc4n3n2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.