2-[5-[1-[6-[2-[[(2S)-6-[4-[4-[[8-(diethylamino)-10-phenylphenazin-10-ium-2-yl]diazenyl]-N-methylanilino]butanoylamino]-2-[[1-[[4-[2-(4-methylpiperazin-1-yl)-1,3-thiazol-4-yl]benzoyl]amino]cyclohexanecarbonyl]amino]hexanoyl]amino]ethylamino]-6-oxohexyl]-3,3-dimethyl-5-sulfo-4,5-dihydroindol-2-ylidene]penta-1,3-dienyl]-1-ethyl-3,3-dimethylindol-1-ium-5-sulfonic acid