1,3-benzenedicarbonitrile, 4-amino-6-hydroxy-2-methyl-5-[(4-methylphenyl)sulfonyl]- 4-amino-6-hydroxy-2-methyl-5-[(4-methylphenyl)sulfonyl]isophthalonitrile InChI=1/C16H13N3O3S/c1-9-3-5-11(6-4-9)23(21,22)16-14(19)12(7-17)10(2)13(8-18)15(16)20/h3-6,20H,19H2,1-2H