2-Anthracenesulfonic acid, 4-((4-(acetylamino)phenyl)amino)-1-amino-9,10-dihydro-9,10-dioxo-, compd. with alpha,alpha',alpha''-(nitrilotri-2,1-ethanediyl)tris(omega-hydroxypoly(oxy-1,2-ethanediyl)) (1:1) 4-((4-(Acetylamino)phenyl)amino)-1-amino-2-anthraquinonesulfonic acid, ethoxylated triethanolamine salt 75627-34-8