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