111211-43-9 1H-Pyrazole-3-carboxylic acid, 4-((5-((4-chloro-6-((4-((2-(sulfooxy)ethyl)sulfonyl)phenyl)amino)-1,3,5-triazin-2-yl)amino)-2-sulfophenyl)azo)-4,5-dihydro-5-oxo-1-(4-sulfophenyl)-, tetrapotassium salt