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