InChI=1S/C21H22O13/c1-21(30)18(27)13(23)11-9(34-21)4-6-3-7(5-8(31-2)10(6)12(11)22)32-20-16(26)14(24)15(25)17(33-20)19(28)29/h3-5,14-18,20,22,24-27,30H,1-2H3,(H,28,29)