Synonym2-[7-[1,3-dihydro-1,1-dimethyl-3(4-sulfobutyl)-2H-benz[e]indol-2-ylidene]-1,3,5-heptatrienyl]-1,1-dimethyl-3-(4-sulfobutyl)-1H-benz[e]indoliumhydroxide, inner salt, sodium salt; Cardiogreen