InChI=1S/C21H22O9/c22-13-7-4-11(5-8-13)6-9-15(23)12-2-1-3-14(10-12)29-21-18(26)16(24)17(25)19(30-21)20(27)28/h1-5,7-8,10,16-19,21-22,24-26H,6,9H2,(H,27,28)