2-Anthracenesulfonic acid, 4,4'-[1,2-ethanediylbis[imino(6-fluoro-1,3,5-triazine-4,2-diyl)imino(2,4,6-trimethyl-5-sulfo-3,1-phenylene)imino]]bis[1-amino-9,10-dihydro-9,10-dioxo-, sodium salt (1:?)