InChI=1S/C27H28O12/c1-27(2)17(39-27)7-12-15(37-26-21(31)19(29)20(30)24(38-26)25(32)33)8-16-18(22(12)34-3)23-13(9-35-16)11-5-4-10(28)6-14(11)36-23/h4-6,8,17,19-21,24,26,28-31H,7,9H2,1-3H3,(H,32,33)