InChI=1S/C17H20O11/c18-9-3-1-7(2-4-9)5-8(6-10(19)20)16(26)28-17-13(23)11(21)12(22)14(27-17)15(24)25/h1-4,8,11-14,17-18,21-23H,5-6H2,(H,19,20)(H,24,25)