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