InChI=1S/C27H30O12/c1-35-20-10-14(5-7-17(20)29)19-12-15(28)11-16(37-19)6-3-13-4-8-18(21(9-13)36-2)38-27-24(32)22(30)23(31)25(39-27)26(33)34/h3-10,16,19,22-25,27,29-32H,11-12H2,1-2H3,(H,33,34)/b6-3+