InChI=1S/C22H24O8/c1-11-19(24)20(25)21(26)22(28-11)29-14-7-8-15-16(23)10-17(30-18(15)9-14)12-3-5-13(27-2)6-4-12/h3-9,11,17,19-22,24-26H,10H2,1-2H3