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