The molecule is compound 524 in Scheme 3 from pmid:30468448. Produced by the same enzyme that produces CHEBI:144560 It derives from a parthenolide.
(1S,2R,4R,5S,7E,11S)-5-hydroxy-4,8-dimethyl-12-methylidene-3,14-dioxatricyclo[9.3.0.02,4]tetradec-7-en-13-one