InChI=1S/C22H28O8/c1-3-5-7-8-12-10-13-16(21(27)29-18(13)24)17(23)22(28,9-6-4-2)11-14-15(12)20(26)30-19(14)25/h12,17,23,28H,3-11H2,1-2H3