3-[4,5-dihydro-4-[(2-methoxy-4-nitrophenyl)azo]-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulphonamide

3-[[4,5-Dihydro-4-[(2-methoxy-4-nitrophenyl)azo]-3-methyl-5-oxo-1H-pyrazol]-1-yl]benzenesulfonamide