InChI=1S/C19H18O10/c20-10-6-2-1-5-9(10)18(26)27-11-7-3-4-8-12(11)28-19-15(23)13(21)14(22)16(29-19)17(24)25/h1-8,13-16,19-23H,(H,24,25)