The molecule is the conjugate base of testolic acid; major species at pH 7.3. It is a conjugate base of a testolic acid.
3-[(1S,2S,4aS,4bR,10aR)-2-hydroxy-2,4b-dimethyl-7-oxo-3,4,4a,5,6,9,10,10a-octahydro-1H-phenanthren-1-yl]propanoate