InChI=1S/C22H22O11/c1-10(9-31-22-16(26)14(24)15(25)19(33-22)21(27)28)4-6-30-20-17-12(5-7-29-17)8-11-2-3-13(23)32-18(11)20/h2-5,7-8,14-16,19,22,24-26H,6,9H2,1H3,(H,27,28)/b10-4+