InChI=1S/C22H21O12/c1-31-11-3-8(2-9(23)4-11)19-13(25)7-12-14(32-19)5-10(24)6-15(12)33-22-18(28)16(26)17(27)20(34-22)21(29)30/h2-7,16-18,20,22-28H,1H3,(H,29,30)