InChI=1S/C20H30O8/c1-10-5-12-19(8-21,6-11(10)27-13(22)7-17(2,3)25)18(4)15(24)14(23)16(28-12)20(18)9-26-20/h5,11-12,14-16,21,23-25H,6-9H2,1-4H3