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2-(3,4-DICHLORO-PH)-2-HO-1-(3-HO-6-NITRO-2-QUINOXALINYL)ETHANONE PHENYLHYDRAZONE 2-(3,4-DICHLORO-PH)-2-HO-1-(3-HO-6-NITRO-2-QUINOXALINYL)ETHANONE PHENYLHYDRAZONE