The molecule is a phenolate anion obtained by deprotonation of the 2-hydroxy group of (S)-versiconol. It is the major microspecies at pH 7.3 (according to Marvin v 6.2.0.). It is a conjugate base of a (S)-versiconol.
2-[(2S)-1,4-dihydroxybutan-2-yl]-3,6,8-trihydroxy-9,10-dioxoanthracen-1-olate