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Ethanaminium,N-[4-[[3,4-bis(sulfomethyl)phenyl][4-(diethylamino)phenyl]methylene]-2,5-cyclohexadien-1-ylidene]-N-ethyl-,inner salt, potassium salt (1:1)

 
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 Ethanaminium,N-[4-[[3,4-bis(sulfomethyl)phenyl][4-(diethylamino)phenyl]methylene]-2,5-cyclohexadien-1-ylidene]-N-ethyl-,inner salt, potassium salt (1:1)
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