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