InChI=1S/C16H20O9/c1-23-10-4-2-8(6-9(10)18)3-5-12(19)25-16-15(22)14(21)13(20)11(7-17)24-16/h2-6,11,13-18,20-22H,7H2,1H3/b5-3+/t11-,13-,14+,15-,16+/m1/s1