InChI=1S/C18H20O11/c1-18(2)5-8(19)6-3-7(15(23)24)9(4-10(6)29-18)27-17-13(22)11(20)12(21)14(28-17)16(25)26/h3-4,11-14,17,20-22H,5H2,1-2H3,(H,23,24)(H,25,26)