SMILES: C1=CC2=C(C=C1S(=O)(=O)O)C(=O)C3=C(C2=O)C=C(C=C3)S(=O)(=O)O
Description: The molecule is a member of the class of anthraquinones that is 9,10-anthraquinone substituted at positions 2 and 6 by sulfo groups. It is an anthraquinone and an arenesulfonic acid. It derives from a 9,10-anthraquinone. It is a conjugate acid of an anthraquinone-2,6-disulfonate.