InChI=1S/C19H30O8/c1-9(21)5-6-11-10(2)14(22)12(7-19(11,3)4)26-18-17(25)16(24)15(23)13(8-20)27-18/h5-6,12-18,20,22-25H,7-8H2,1-4H3/b6-5+