InChI=1S/C31H30O16/c1-43-17-5-10(2-3-15(17)34)26-14(9-32)13-4-11(27-23(38)21(36)20-16(35)7-12(33)8-18(20)44-27)6-19(28(13)46-26)45-31-25(40)22(37)24(39)29(47-31)30(41)42/h2-8,14,22-27,29,31-35,37-40H,9H2,1H3,(H,41,42)