2-(2-Isopropenyl-5-methoxycarbonyl-7-oxo-oct-4-enyl)-2-methoxy-5-(2-oxo-propylidene)-2,5-dihydro-furan-3-carboxylic acid methyl ester 3-furancarboxylic acid, 2,5-dihydro-2-methoxy-2-[(2S,4E)-5-(methoxycarbonyl)-2-(1-methylethenyl)-7-oxo-4-octenyl]-5-(2-oxopropylidene)-, methyl ester, (2R,5Z)- InChI=1/C23H30O8/c1-14(2)18(9-8-17(10-15(3)24)21(26)28-5)13-23(30-7)20(22(27)29-6)12-19(31-23)11-16(4)25/h8,11-12,18H,1,9-10,13H2,2-7H3/b17-8+,19-11-/t18-,23+/m0/s Seco-sethukarailin methyl rel-(2R,5Z)-2-[(2S,4E)-2-isopropenyl-5-(methoxycarbonyl)-7-oxooct-4-en-1-yl]-2-methoxy-5-(2-oxopropylidene)-2,5-dihydrofuran-3-carboxylate