Brc1ccc2c(c1)ncc1ccc3c4ccc(Br)cc4[nH]c3c12	6,18-dibromo-3,15-diazapentacyclo[11.8.0.02,10.04,9.016,21]henicosa-1(13),2(10),4(9),5,7,11,14,16(21),17,19-decaene