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