Using NCC(N)c1cccc(Br)c1, O=C1C(=O)c2ccccc2-c2ccccc21 to produce Brc1cccc(-c2cnc3c4ccccc4c4ccccc4c3n2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.