Saccharomyces cerevisiae, a common species of yeast used in baking and brewing
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4-nitrophenylhydroxylamine
(S)-(-)-α-methoxy-α-(trifluoromethyl)pnenylacetyl acid ester of methyl (+)-(1R,2R,3S,5S)-3-hydroxy-7-oxobicyclo<3.3.0>octane-2-carboxylate