(2S,3S,4S)-3-Hydroxy-4-methyl-2-[(7'piperonyl)-n-heptyl]-gamma-lactone (3S,4S,5S)-3-[7-(1,3-benzodioxol-5-yl)heptyl]-4-hydroxy-5-methyldihydrofuran-2(3H)-one (non-preferred name) 1,2-ethanedione, 1-(6-hydroxy-1,3-benzodioxol-5-yl)-2-(2-hydroxy-4-methoxyphenyl)- InChI=1/C19H26O5/c1-13-18(20)15(19(21)24-13)8-6-4-2-3-5-7-14-9-10-16-17(11-14)23-12-22-16/h9-11,13,15,18,20H,2-8,12H2,1H3/t13-,15-,18+/m0/s epi-Juruenolide C