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