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