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1-methyl-3-[(4-{[(2E)-3-{4-[(1E)-3-({4-[(1-methylpyridinium-4-yl)amino]phenyl}amino)-3-oxoprop-1-en-1-yl]phenyl}prop-2-enoyl]amino}phenyl)amino]pyridinium bis(4-methylbenzenesulfonate) related products: