2-benzofurancarboxylic acid, 4,5,6,7-tetrahydro-3,6,6-trimethyl-4-oxo-, 2,2-diphenylhydrazide;3,6,6-Trimethyl-4-oxo-N',N'-diphenyl-4,5,6,7-tetrahydro-1-benzofuran-2-carbohydrazide
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