The molecule is a arenesulfonic acid in which two sulfonated indole moieties are linked via a 4-methylhepta-1,3,5-triene-1,7-diyl chain. It is a member of indoles, an arenesulfonic acid and an iminium betaine. It is a conjugate acid of a tetrasulfocyanine(3-).
2-[(2E)-2-[(2E,4E,6E)-7-[3,3-dimethyl-5-sulfo-1-(2-sulfoethyl)indol-1-ium-2-yl]-4-methylhepta-2,4,6-trienylidene]-3,3-dimethyl-5-sulfoindol-1-yl]ethanesulfonate