The molecule is the (2S,3S)-stereoisomer of dihydromyricetin. It is a dihydromyricetin and a secondary alpha-hydroxy ketone. It is an enantiomer of a (+)-dihydromyricetin.
(2S,3S)-3,5,7-trihydroxy-2-(3,4,5-trihydroxyphenyl)-2,3-dihydrochromen-4-one