InChI=1S/C19H16O9/c20-13-14(21)16(17(23)24)28-19(15(13)22)26-8-5-6-10-9-3-1-2-4-11(9)18(25)27-12(10)7-8/h1-7,13-16,19-22H,(H,23,24)/t13-,14-,15+,16-,19+/m0/s1