InChI=1S/C21H22O10/c22-12-6-10(29-21-17(26)15(24)16(25)19(31-21)20(27)28)7-14-11(12)8-13(23)18(30-14)9-4-2-1-3-5-9/h1-7,13,15-19,21-26H,8H2,(H,27,28)