InChI=1S/C20H22O12/c1-20(28,6-21)9-5-8-4-7-2-3-10(22)30-14(7)17(15(8)29-9)32-19-13(25)11(23)12(24)16(31-19)18(26)27/h2-4,9,11-13,16,19,21,23-25,28H,5-6H2,1H3,(H,26,27)