InChI=1S/C21H18O12/c22-10-5-11-12(15(25)14(10)24)13(23)9(6-31-11)7-1-3-8(4-2-7)32-21-18(28)16(26)17(27)19(33-21)20(29)30/h1-6,16-19,21-22,24-28H,(H,29,30)