InChI=1S/C21H20O11/c22-11-4-2-1-3-9(11)10-7-30-13-6-8(5-12(23)14(13)15(10)24)31-21-18(27)16(25)17(26)19(32-21)20(28)29/h1-6,10,16-19,21-23,25-27H,7H2,(H,28,29)