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