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