sodium 5-[[3-[[5-[[4-[[[4-[(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl)azo]phenyl]amino]carbonyl]phenyl]azo]-2,4-dihydroxyphenyl]azo]-4-hydroxyphenyl]azo]salicylate

5-[3-[5-[4-[4-[(4,5-Dihydro-3-methyl-5-oxo-1H-pyrazol)-4-ylazo]phenylaminocarbonyl]phenylazo]-2,4-dihydroxyphenylazo]-4-hydroxyphenylazo]-2-hydroxybenzoic acid sodium salt