InChI=1S/C27H22O16/c28-10-4-14-20-11(6-16(40-14)26(37)38)25(24(41-15(20)5-10)9-1-2-12(29)13(30)3-9)43-27-23(36)22(35)21(34)17(42-27)8-39-19(33)7-18(31)32/h1-6,17,21-23,27,34-36H,7-8H2,(H4-,28,29,30,31,32,37,38)/p+1/t17-,21-,22+,23-,27+/m1/s1