InChI=1S/C17H14O11/c18-7-2-1-5-8(19)6-3-4-25-12(6)15(13(5)26-7)28-17-11(22)9(20)10(21)14(27-17)16(23)24/h1-4,9-11,14,17,19-22H,(H,23,24)