The molecule is the conjugate base of (+)-epitaxifolin arising from selective deprotonation of the 7-OH group; major species at pH 7.3. It is a conjugate base of a (+)-epitaxifolin.
(2S,3R)-2-(3,4-dihydroxyphenyl)-3,7-dihydroxy-4-oxo-2,3-dihydrochromen-5-olate