InChI=1S/C21H22O13/c1-31-10-4-8(23)2-7-3-11-13(9(24)5-21(30,6-22)34-11)17(12(7)10)32-20-16(27)14(25)15(26)18(33-20)19(28)29/h2-4,14-16,18,20,22-23,25-27,30H,5-6H2,1H3,(H,28,29)