InChI=1S/C15H22O8/c1-2-3-4-6-9(7-5-8-16)22-15-12(19)10(17)11(18)13(23-15)14(20)21/h3-5,7-13,15,17-19H,2,6H2,1H3,(H,20,21)/b4-3-,7-5+