SMILES: C12=C(C(=C(C(=C1O)O)S(=O)(=O)[O-])O)C(=O)C3=C(C2=O)C(=C(C(=C3O)O)S(=O)(=O)[O-])O
Description: The molecule is an organosulfonate oxoanion obtained by deprotonation of the sulfo groups of 1,3,4,5,7,8-hexahydroxy-9,10-dioxo-9,10-dihydroanthracene-2,6-disulfonic acid. It is a conjugate base of a 1,3,4,5,7,8-hexahydroxy-9,10-dioxo-9,10-dihydroanthracene-2,6-disulfonic acid.