InChI=1S/C21H28O13/c1-2-3-8-4-5-9(31-20-16(27)13(24)12(23)11(7-22)33-20)10(6-8)32-21-17(28)14(25)15(26)18(34-21)19(29)30/h2,4-6,11-18,20-28H,1,3,7H2,(H,29,30)