5-[[4,5-Dihydro-5-oxo-3-(1-oxohexadecylamino)-1H-pyrazol]-1-yl]-2-phenoxybenzenesulfonic acid

5-[4,5-dihydro-5-oxo-3-[(1-oxohexadecyl)amino]-1H-pyrazol-1-yl]-2-phenoxybenzenesulphonic acid