title: The Structure and Probable Biogenesis of Helianane, a Heterocyclic Sesquiterpene, from the Indo-Pacific Sponge Haliclona?fascigera.
authors.affiliation: Department of Chemistry and Biochemistry, University of California, Santa Cruz, Santa Cruz, California 95064.
authors.forename: Blaine
authors.initials: B
authors.lastname: Harrison
authors.forename: Phillip
authors.initials: P
authors.lastname: Crews