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BR-2-HO-BENZOIC ACID (3,5-DI-TERT-BU-4-OXO-CYCLOHEXA-2,5-DIENYLIDENE)-HYDRAZIDE BR-2-HO-BENZOIC ACID (3,5-DI-TERT-BU-4-OXO-CYCLOHEXA-2,5-DIENYLIDENE)-HYDRAZIDE