InChI=1S/C20H24O11/c21-12(11-13(22)23)9-7-5-3-1-2-4-6-8-10-14(24)30-20-17(27)15(25)16(26)18(31-20)19(28)29/h1-10,12,15-18,20-21,25-27H,11H2,(H,22,23)(H,28,29)/b2-1+,5-3-,6-4+,9-7+,10-8-