1H-Pyrazole-3-carboxylic acid, 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-, coupled with diazotized 2-(4-aminophenyl)-6-methyl(2,6-bibenzothiazole)-7-sulfonic acid, diazotized 2-(4-aminophenyl)-6-methyl(2,6: