2-oxocanone, 7-[(4E,8E)-11-(3-furanyl)-4,8-dimethyl-4,8-undecadienylidene]-4-hydroxy-3-methyl-, (3R,4R,7Z)- 7-(11-Furan-3-yl-4,8-dimethyl-undeca-4,8-dienylidene)-4-hydroxy-3-methyl-oxocan-2-one Astakolactin InChI=1/C25H36O4/c1-19(7-4-8-20(2)10-6-12-23-15-16-28-17-23)9-5-11-22-13-14-24(26)21(3)25(27)29-18-22/h7,10-11,15-17,21,24,26H,4-6,8-9,12-14,18H2,1-3H3/b19-7+,20-10+,22-11-/t21-,24-/m1/s rel-(3R,4R,7Z)-7-[(4E,8E)-11-(3-furyl)-4,8-dimethylundeca-4,8-dien-1-ylidene]-4-hydroxy-3-methyloxocan-2-one