InChI=1S/C20H14O5/c21-11-7-8-15-19-18(11)12(22)9-16(23-15)20(19)24-13-5-1-3-10-4-2-6-14(25-20)17(10)13/h1-8,15-16,18-19H,9H2/t15-,16+,18-,19-/m1/s1