InChI=1S/C15H24O8/c16-8-6-4-2-1-3-5-7-9-22-15-12(19)10(17)11(18)13(23-15)14(20)21/h1-2,4,6,10-13,15-19H,3,5,7-9H2,(H,20,21)/b2-1+,6-4+