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