InChI=1S/C21H28O12/c1-2-3-9-4-6-10(7-5-9)30-21-18(14(25)12(23)11(8-22)31-21)33-20-16(27)13(24)15(26)17(32-20)19(28)29/h2,4-7,11-18,20-27H,1,3,8H2,(H,28,29)