The molecule is a pyrrolizine alkaloid that is otosenine in which the hydroxy hydrogen has been replaced by an acetyl group. It has a role as a Jacobaea metabolite. It is an enone, a macrocyclic lactone, a pyrrolizine alkaloid, an organic heterobicyclic compound, a spiro-epoxide, a tertiary amino compound and an acetate ester. It derives from an otosenine.
[(1R,3'S,4S,6R,7R,11Z)-3',6,7,14-tetramethyl-3,8,17-trioxospiro[2,9-dioxa-14-azabicyclo[9.5.1]heptadec-11-ene-4,2'-oxirane]-7-yl] acetate