InChI=1S/C15H24O8/c1-9(8-16)6-4-2-3-5-7-22-15-12(19)10(17)11(18)13(23-15)14(20)21/h6,8,10-13,15,17-19H,2-5,7H2,1H3,(H,20,21)/b9-6-