InChI=1S/C31H28O13/c1-39-21-7-14(8-22(40-2)25(21)35)29-30(44-31-28(38)27(37)26(36)23(12-32)43-31)17-11-18(13-3-5-15(33)6-4-13)41-19-9-16(34)10-20(42-29)24(17)19/h3-11,23,26-28,31-32,36-38H,12H2,1-2H3,(H2-,33,34,35)/p+1/t23-,26-,27+,28-,31+/m1/s1