InChI=1S/C21H24O12/c1-21(20(28)29,8-31-19-15(25)13(23)14(24)17(33-19)18(26)27)7-10-11(30-2)5-3-9-4-6-12(22)32-16(9)10/h3-6,13-15,17,19,23-25H,7-8H2,1-2H3,(H,26,27)(H,28,29)