SMILES: C1=C(C=C(C2=C1C(=O)C(=O)C(=C2[O-])C3=C4C(=C(C=C3O)[O-])C(=CC(=O)C4=O)O)O)O
Description: The molecule is dianion of 3,8'-biflaviolin arising from selective deprotonation of the OH groups at the 2- and 2'-positions. It is a conjugate base of a 3,8'-biflaviolin. It is a conjugate acid of a 3,8'-biflaviolin 2,7,2'-triolate.