1-ethyl-2-[2-[[[[4-[[4-[[[4-[[4-[[[4-[[4-[[[2-[ethyl[(heptadecafluorooctyl)sulfonyl]amino]ethoxy]carbonyl]amino]phenyl]methyl]phenyl]carbonimidoyl]amino]phenyl]methyl]phenyl]carbonimidoyl]amino]phenyl]methyl]phenyl]amino]carbonyl]oxy]ethyl]-pyridinium ethyl sulfate