title: (1S*,2R*,4aS*,6aS*,6bR*,10S*,12aR*,14aS*)-10-Hydr-oxy-1,2,6a,6b,9,9,12a-hepta-methyl-perhydro-picene-4a,14a-carbolactone.
abstract: The title compound, C(30)H(48)O(3), was extracted from the plant Dracocephalum rupestre Hance. The mol-ecule contains five fused cyclo-hexane rings and one five-membered lactone ring. Inter-molecular O-H⋯O hydrogen bonds between the hydroxyl and carbonyl groups link the mol-ecules into chains along [010]. The absolute structure has not been determined.
authors.forename: Dan-Wei
authors.initials: DW
authors.lastname: Ou-Yang
authors.forename: Jian-Ping
authors.initials: JP
authors.lastname: Gao
authors.forename: Qing-Shan
authors.initials: QS
authors.lastname: Li
authors.forename: Jian-Ping
authors.initials: JP
authors.lastname: Guo