שליחת רשומה: Bis(2-{[3-methyl-4-(2,2,2-trifluoro­eth­oxy)-2-pyrid­yl]methyl­sulfan­yl}-1H,3H (+)-benzimidazolium) 2,5-dichloro-3,6-dioxocyclo­hexa-1,4-diene-1,4-diolate