TRISODIUM 2-(2-(2-CHLORO-3-(2-(3,3-DIMETHYL-5-SULFONATO-1-(4-SULFONATOBUTYL)INDOLIN-2-YLIDENE)ETHYLIDENE)CYCLOHEX-1-ENYL)VINYL)-3,3-DIMETHYL-1-(4-SULFONATOBUTYL)-3H-INDOLIUM-5-SULFONATE

3,3-Dimethyl-2-[2-[2-chloro-3-[2-[1,3-dihydro-3,3-dimethyl-5-sulfo-1-(4-sulfobutyl)-2H-indol-2-ylidene]ethylidene]-1-cyclohexen-1-yl]ethenyl]-5-sulfo-1-(4-sulfobutyl)-3H-indolium inner salt trisodium salt