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