InChI=1S/C18H20O10/c1-6-10(19)9-7(15(23)18(6,2)26)4-3-5-8(9)27-17-13(22)11(20)12(21)14(28-17)16(24)25/h3-6,11-14,17,20-22,26H,1-2H3,(H,24,25)