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