(1R,2E,4S,6Z,9E,11R)-11-hydroxy-7-(hydroxymethyl)-4-[(2E)-4-hydroxy-4-methylpent-2-en-1-yl]-4,11-dimethyl-8-oxocycloundeca-2,6,9-trien-1-yl rel-3-methylbut-2-enoate 2-butenoic acid, 3-methyl-, (1R,2E,4S,6Z,9E,11R)-11-hydroxy-7-(hydroxymethyl)-4-[(2E)-4-hydroxy-4-methyl-2-pentenyl]-4,11-dimethyl-8-oxo-2,6,9-cycloundecatrien-1-yl ester 3-Methyl-but-2-enoic acid 11-hydroxy-7-hydroxymethyl-4-(4-hydroxy-4-methyl-pent-2-enyl)-4,11-dimethyl-8-oxo-cycloundeca-2,6,9-trienyl ester InChI=1/C25H36O6/c1-18(2)16-22(28)31-21-10-14-24(5,12-7-11-23(3,4)29)13-8-19(17-26)20(27)9-15-25(21,6)30/h7-11,14-16,21,26,29-30H,12-13,17H2,1-6H3/b11-7+,14-10+,15-9+,19-8-/t21-,24+,25-/m1/s Vibsanol A