InChI=1S/C20H30O9/c1-12(6-5-7-13(2)10-21)8-9-26-20-19(28-15(4)23)18(25)17(24)16(29-20)11-27-14(3)22/h7,10,16-20,24-25H,1,5-6,8-9,11H2,2-4H3/b13-7+/t16-,17-,18+,19-,20-/m1/s1