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