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