1,2,4-triazino[5,6-b]quinoxaline, 3-(2,6-dichlorophenyl)- 3-(2,6-dichlorophenyl)[1,2,4]triazino[5,6-b]quinoxaline InChI=1/C15H7Cl2N5/c16-8-4-3-5-9(17)12(8)13-20-14-15(22-21-13)19-11-7-2-1-6-10(11)18-14/h1-7