The molecule is a pyrrolizine alkaloid that is 13,19-didehydrosenecionane carrying a hydroxy substituent at position 12, two oxo substituents at positions 11 and 16 and an N-oxido substituent. It has a role as a Jacobaea metabolite. It is a macrocyclic lactone, an olefinic compound, an organic heterotricyclic compound, a pyrrolizine alkaloid, a tertiary alcohol and a tertiary amine oxide. It derives from a spartioidine.
(1R,4E,7R,17R)-4-ethylidene-7-hydroxy-7-methyl-6-methylidene-14-oxido-2,9-dioxa-14-azoniatricyclo[9.5.1.014,17]heptadec-11-ene-3,8-dione