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hydrogen [4-[4-(diethylamino)-3',4'-bis(sulphonatomethyl)benzhydrylidene]cyclohexa-2,5-dien-1-ylidene]diethylammonium, monosodium salt  Structure

hydrogen [4-[4-(diethylamino)-3',4'-bis(sulphonatomethyl)benzhydrylidene]cyclohexa-2,5-dien-1-ylidene]diethylammonium, monosodium salt