SMILES: C[C@@H]1[C@@H]2C3=C([C@H](O1)C)C(=C4C(=O)C[C@]5(C6=C7C8=C([C@H](O[C@@H]([C@H]8O5)C)C)C(=C9C7=C(C3=C46)[C@@](O2)(CC9=O)O)O)O)O
Description: The molecule is the product from the treatment of protoaphin aglucone with protoaphin dehydratase (EC 4.2.1.73). It is an organic polycyclic compound and a hemiketal. It is a conjugate acid of a xanthoaphin(1-).