The molecule is a quassinoid that is picras-2-ene substituted by hydroxy groups at positions 11, 13 and 16, methoxy groups at positions 2 and 12 and an oxo group at position 1 (the 11alpha,12beta stereoisomer). It has a role as an antifeedant. It is a quassinoid, a lactol and an organic heterotetracyclic compound. It derives from a hydride of a picrasane.
(1S,2S,6S,7S,9R,13R,14S,15R,16S,17R)-11,14,16-trihydroxy-4,15-dimethoxy-2,6,14,17-tetramethyl-10-oxatetracyclo[7.7.1.02,7.013,17]heptadec-4-en-3-one