Hydrogen[4-[[4-(dimethylamino)-3-sulphonatophenyl][4-[methyl(3-sulphonatobenzyl)amino]phenyl]methylene]cyclohexa-2,5-dien-1-ylidene]dimethylammonium,sodium salt
Hydrogen[4-[[4-(dimethylamino)-3-sulphonatophenyl][4-[methyl(3-sulphonatobenzyl)amino]phenyl]methylene]cyclohexa-2,5-dien-1-ylidene]dimethylammonium,sodium salt