The benzene rings of the title compound, C18H20O6, are nearly perpendicular
to each other [dihedral angle 75.2 (1)degrees]. The two methoxy groups and
the acetyl group are almost coplanar to their attached benzene rings. One
hydroxyl group is involved in an intramolecular O-H . . .O hydrogen bond wi
th the adjacent acetyl O atom. The crystal structure is stabilized by inter
molecular O-H . . .O contacts.