InChI=1S/C22H21O11/c1-30-11-4-2-3-9(5-11)19-13(24)8-12-14(31-19)6-10(23)7-15(12)32-22-18(27)16(25)17(26)20(33-22)21(28)29/h2-8,16-18,20,22-27H,1H3,(H,28,29)