InChI=1S/C20H26O12/c1-7(2)4-5-8-9(21)6-10(22)11(16(8)30-3)12(23)19(29)32-20-15(26)13(24)14(25)17(31-20)18(27)28/h4,6,12-15,17,20-26H,5H2,1-3H3,(H,27,28)