2H-Naphtho(1,2-d)triazole-6,8-disulfonic acid, 2,2'-(2,3-oxadiaziridinediylbis((2-sulfo-4,1-phenylene)-2,1-ethenediyl(3-sulfo-4,1-phenylene)-3,2-oxadiaziridinediyl-4,1-phenylene))bis-, octasodium salt 71701-34-3