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