InChI=1S/C25H24O9/c1-32-19-4-10(2-3-15(19)27)21-13-7-12(23-14(21)9-33-25(23,31)24(13)30)18-8-17(29)22-16(28)5-11(26)6-20(22)34-18/h2-6,12-14,18,21,23,26-28,31H,7-9H2,1H3