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