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2-[3-[4-methyl-2-[[4-methyl-5-[(E)-(3-methyl-5-oxo-4-vinyl-pyrrol-2-ylidene)methyl]-3-[3-oxo-3-(2-sulfoethylamino)propyl]-1H-pyrrol-2-yl]methyl]-5-[(E)-(4-methyl-5-oxo-3-vinyl-pyrrol-2-ylidene)methyl] related products: