InChI=1S/C22H20O13/c23-9-4-12(25)10-6-15(20(33-14(10)5-9)8-1-2-11(24)13(26)3-8)34-21-19(29)18(28)17(27)16(35-21)7-32-22(30)31/h1-6,16-19,21,27-29H,7H2,(H4-,23,24,25,26,30,31)/p+1/t16-,17-,18+,19-,21-/m1/s1