(5S)-5-[(1E,3E)-dodeca-1,3-dien-1-yl]-5-methyl-3-methylenedihydrofuran-2(3H)-one 2(3H)-furanone, 5-[(1E,3E)-1,3-dodecadienyl]dihydro-5-methyl-3-methylene-, (5S)- 5-Dodeca-1,3-dienyl-5-methyl-3-methylene-dihydro-furan-2-one InChI=1/C18H28O2/c1-4-5-6-7-8-9-10-11-12-13-14-18(3)15-16(2)17(19)20-18/h11-14H,2,4-10,15H2,1,3H3/b12-11+,14-13+/t18-/m1/s Plakolide A