7-Benzothiazolesulfonic acid, 2-(4-((4-((3-((5-(aminocarbonyl)-1-ethyl-1,6-dihydro-2-hydroxy-4-methyl-6-oxo-3-pyridinyl)azo)-4-sulfophenyl)amino)-6-chloro-1,3,5-triazin-2-yl)amino)phenyl)-6-methyl-, disodium salt 85665-95-8