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