Formula: C30H18O10 | Mol. Weight: 538.50 g/mol
IUPAC: (2Z)-2-[(2Z)-1,2-bis(3,4-dihydroxyphenyl)-2-(6-hydroxy-3-oxo-1-benzofuran-2-ylidene)ethylidene]-6-hydroxy-1-benzofuran-3-one
C1=CC(=C(C=C1C(=C2C(=O)C3=C(O2)C=C(C=C3)O)C(=C4C(=O)C5=C(O4)C=C(C=C5)O)C6=CC(=C(C=C6)O)O)O)O