trisodium 2-[4-[2-[4-[(hexahydro-2,4,6-trioxopyrimidin-5-yl)azo]-2-sulphonatophenyl]vinyl]-3-sulphonatophenyl]-2H-naphtho[1,2-d]triazole-5-sulphonate

2-[4-[2-[4-[[(Hexahydro-2,4,6-trioxopyrimidin)-5-yl]azo]-2-[(sodiooxy)sulfonyl]phenyl]ethenyl]-3-[(sodiooxy)sulfonyl]phenyl]-2H-naphtho[1,2-d]triazole-5-sulfonic acid sodium salt