6950-40-9

(3E)-5-amino-3-{2-[4-({4-[(E)-(4-amino-2-methylphenyl)diazenyl]phenyl}sulfanyl)phenyl]hydrazinylidene}-6-[(E)-(4-nitrophenyl)diazenyl]-4-oxo-3,4-dihydronaphthalene-2,7-disulfonic acid