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In the title compound, C
19H
20O
9, the benzene rings are nearly perpendicular to each other [dihedral angle 86.39 (8)°]. All three hydroxy groups are involved in intramolecular O—H
O hydrogen bonds.
Supporting information
| Crystallographic Information File (CIF) Contains datablocks global, kan1m |
| Structure factor file (CIF format) Contains datablock kan1m |
CCDC reference: 130487
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