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1H-Pyrazolium,1-[4-[4-(4,5-dihydro-5-methyl-3,5-diphenyl-1H-pyrazolium-1-ylidene)-2,5-cyclohexadien-1-ylidene]-2,5-cyclohexadien-1-ylidene]-4,5-dihydro-5-methyl-3,5-diphenyl- related products: