InChI=1S/C21H20O12/c22-9-5-13(25)15(14(26)6-9)11(23)4-2-8-1-3-10(7-12(8)24)32-21-18(29)16(27)17(28)19(33-21)20(30)31/h1-7,16-19,21-22,24-29H,(H,30,31)