1H-Pyrazole-3-carboxylic acid, 5-(1,1-dimethylethyl)-4,5-dihydro-5-hydroxy-1-(3-nitrobenzoyl)-, ethyl ester;Ethyl 5-tert-butyl-5-hydroxy-1-(3-nitrobenzoyl)-4,5-dihydro-1H-pyrazole-3-carboxylate
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