4-[4-[3-[4-(dimethylamino)phenyl]prop-2-enylidene]-3-methyl-5-oxopyrazol-1-yl]benzenesulfonate;ammonium 4-[4-[3-[4-(dimethylamino)phenyl]-2-propenylidene]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulphonate;4-[[4-[3-[4-(Dimethylamino)phenyl]-2-propenylidene]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol]-1-yl]benzenesulfonic acid ammonium salt