InChI=1S/C23H20O13/c1-7(24)34-6-8-4-10-13(11(25)5-8)17(28)14-9(15(10)26)2-3-12(16(14)27)35-23-20(31)18(29)19(30)21(36-23)22(32)33/h2-5,18-21,23,25,27,29-31H,6H2,1H3,(H,32,33)