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trisodium (3Z)-5-amino-6-{(E)-[4-({4-[(2E)-2-(7-amino-1-oxo-3-sulfonatonaphthalen-2(1H)-ylidene)hydrazinyl]phenyl}carbamoyl)phenyl]diazenyl}-4-oxo-3-(2-phenylhydrazinylidene)-3,4-dihydronaphthalene-2, related products: