InChI=1S/C21H20O12/c22-8-3-1-7(2-4-8)10-6-31-18-9(12(10)23)5-11(13(24)15(18)26)32-21-17(28)14(25)16(27)19(33-21)20(29)30/h1-5,10,14,16-17,19,21-22,24-28H,6H2,(H,29,30)