InChI=1S/C20H24O11/c21-12(18(26)27)10-8-6-4-2-1-3-5-7-9-11-13(22)30-20-16(25)14(23)15(24)17(31-20)19(28)29/h1-9,11-12,14-17,20-21,23-25H,10H2,(H,26,27)(H,28,29)/b3-1-,4-2+,7-5+,8-6+,11-9-