InChI=1S/C31H28O16/c1-43-18-6-10(2-3-14(18)33)26-21(29(39)40)13-4-11(5-16(35)27(13)46-26)17-9-15(34)22-19(44-17)7-12(32)8-20(22)45-31-25(38)23(36)24(37)28(47-31)30(41)42/h2-8,17,21,23-26,28,31-33,35-38H,9H2,1H3,(H,39,40)(H,41,42)