Bharangin tri­acetate

The structure of bharangin tri­acetate [systematic name: 6,10-bis­(acetyl­oxy)-8-iso­propyl-4,4,11a-tri­methyl-2-oxo-2,3,4,6,11,11a-hexa­hydro­benzo­[5,6]­cyclo­hepta­[1,2-b]­pyran-9-yl ace­tate], C₂₆H₃₂O₈, a tricyclic diterpenoid, contains a seven-membered cyclohepta­diene ring forming two planar parts, a six-membered δ-lactone ring in a boat conformation and a planar benzene ring. The structure is stabilized by intra- and intermolecular C—H...O interactions.