InChI=1S/C15H22O8/c1-2-3-6-9(7-4-5-8-16)22-15-12(19)10(17)11(18)13(23-15)14(20)21/h3-6,8-13,15,17-19H,2,7H2,1H3,(H,20,21)/b5-4+,6-3-