InChI=1S/C22H24O9/c1-28-12-4-2-11(3-5-12)15-10-29-16-8-13(6-7-14(16)18(15)24)30-22-21(27)20(26)19(25)17(9-23)31-22/h2-8,15,17,19-23,25-27H,9-10H2,1H3