InChI=1S/C21H30O12/c1-7-3-9-20(5-22,4-8(7)23)19(2)15(13(27)16(31-9)21(19)6-30-21)33-18-12(26)10(24)11(25)14(32-18)17(28)29/h3,8-16,18,22-27H,4-6H2,1-2H3,(H,28,29)