InChI=1S/C21H22O8/c22-16-17(23)19(20(25)26)29-21(18(16)24)28-14-7-6-12-8-13(10-27-15(12)9-14)11-4-2-1-3-5-11/h1-7,9,13,16-19,21-24H,8,10H2,(H,25,26)