5-[6-[[(5S)-6-[[(2S)-3-(1-benzyl-3-methylimidazol-1-ium-4-yl)-1-[(1-methylpiperidin-4-yl)amino]-1-oxopropan-2-yl]amino]-5-[[2-(2-imino-3-methyl-1,3-thiazol-4-yl)acetyl]amino]-6-oxohexyl]carbamoylamino]hexylsulfamoyl]-2-[3-(diethylamino)-6-diethylazaniumylidenexanthen-9-yl]benzenesulfonate