Litsenolide A2

4α-Hydroxy-5β-methyl-3-[(E)-11-dodecen-1-ylidene]-4,5-dihydrofuran-2(3H)-one

(4S)-3-[(1E)-11-Dodecen-1-ylidene]-4,5-dihydro-4α-hydroxy-5β-methylfuran-2(3H)-one