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