InChI=1S/C17H20O11/c18-8-4-6(3-7-1-2-10(19)26-7)5-9(11(8)20)27-17-14(23)12(21)13(22)15(28-17)16(24)25/h4-5,7,12-15,17-18,20-23H,1-3H2,(H,24,25)/t7-,12+,13+,14-,15?,17-/m1/s1