InChI=1S/C21H20O10/c22-10-3-6-12-14(7-10)29-8-13(15(12)23)9-1-4-11(5-2-9)30-21-18(26)16(24)17(25)19(31-21)20(27)28/h1-7,13,16-19,21-22,24-26H,8H2,(H,27,28)