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1,4-Benzenediamine,N1-[4-[[4-[(4-imino-2,5-cyclohexadien-1-ylidene)amino]phenyl]imino]-2,5-cyclohexadien-1-ylidene]-N4-[4-[[4-[[4-(phenylimino)-2,5-cyclohexadien-1-ylidene]amino]phenyl]imino]-2,5-cycl related products: