InChI=1S/C22H22O12/c1-31-21-11(26)6-14-16(18(21)28)10(25)5-13(32-14)8-2-3-12(9(24)4-8)33-22-20(30)19(29)17(27)15(7-23)34-22/h2-6,15,17,19-20,22-24,26-30H,7H2,1H3