InChI=1S/C15H24O8/c1-8(16)6-4-3-5-7-9(2)22-15-12(19)10(17)11(18)13(23-15)14(20)21/h4,6,9-13,15,17-19H,3,5,7H2,1-2H3,(H,20,21)/b6-4-