InChI=1S/C26H26O12/c1-36-20-11-15(3-7-17(20)28)5-9-23(32)38-26(25(34)35)12-19(30)24(33)21(13-26)37-22(31)8-4-14-2-6-16(27)18(29)10-14/h2-11,19,21,24,27-30,33H,12-13H2,1H3,(H,34,35)/b8-4+,9-5+/t19-,21-,24+,26-/m1/s1