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