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