InChI=1S/C21H18O10/c22-10-6-7-12-14(11(23)8-13(29-12)9-4-2-1-3-5-9)18(10)30-21-17(26)15(24)16(25)19(31-21)20(27)28/h1-8,15-17,19,21-22,24-26H,(H,27,28)