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/h1,3,5,7,10-13,15-19H,2,4,6,8-9H2,(H,20,21)/b3-1+,7-5+