The molecule is a phenolate anion obtained by deprotonation of the 8-hydroxy group of (2S-3S)-versiconal hemiacetal. It is the major microspecies at pH 7.3 (according to Marvin v 6.2.0.). It is a conjugate base of a (2S-3S)-versiconal hemiacetal.
(2S,3S)-2,6,8-trihydroxy-3-(2-hydroxyethyl)-5,10-dioxo-2,3-dihydronaphtho[2,3-f][1]benzofuran-4-olate